On August 10, Russia’s FSB made an explosive claim: they foiled a Ukrainian-led terrorist attack in Crimea, resulting in the deaths of an FSB officer and a Russian soldier. This attempted attack, as the FSB claims, took place from the night of August 6 until August 8, when a group of “saboteurs” from Ukraine were discovered in the Armyansk area of northern Crimea. A fight resulting after an attempt to arrest these “saboteurs” led to the death of an FSB officer and the discovery of a large cache of weapons: improvised explosive devices, TNT, mines, grenades, and so on. A Ukrainian man, Yevgeny Panov, born 1977 from the Zaporozhye Oblast, was detained along with others. Furthermore, according to the FSB claim, the Ukrainian Armed Forces conducted shelling from the Kherson Oblast, killing one Russian soldier.

Russian state newspaper Rossiyskaya Gazeta (RG) fills in additional details. Per RG, “about 20 people” were seen in Armyansk on August 6 with weapons and explosives, wearing Russian military uniforms.

As expected, Ukraine has dismissed these reports, along with most Ukrainian and many Western journalists. It is too early to completely dismiss or confirm the FSB account, or any particular elements from it; however, there are a handful of open source materials from the past week that help shed light to help us understand.

The FSB narrative of a border attack shares some similarities with an account that spread through various pro-separatist news sites. The “independent expert” Tanay Cholkhanov, who has regularly given dispatches and interviews related to the war to separatist and pro-Russian websites over the past two years, made a startling claim on August 8: Ukraine has killed three Russian soldiers.

However, there are few reliable witness accounts of these incidents from local residents on Vkontakte, Odnoklassniki, Twitter, or elsewhere. There were news reports on an incident that took place around 4–5am on August 7, including a firefight leading to one death and three wounded at the border, but not to the degree described by Cholkhanov. As for the shelling, there is scant evidence for this taking place at all.

Additionally, there is not a single photograph or video of these incidents of gunfire and shelling. It is possible that these attacks happened just as described by the FSB, but it is also possible that only the Armyansk firefight happened (with one, not three deaths) in the early hours of August 7 and the FSB incorporated in elements of unconfirmed online accounts. This would not be the first time for such a thing to happen. In its July 21, 2014 press conference regarding the downing of MH17, the Russian Ministry of Defense used elements of a disproved story from Russian social networks that erroneously claimed that a billboard seen in a video was in a city other than Luhansk.

On August 7, “Hromadske Crimea” shared an image on its Facebook page that claimed to be an announcement distributed in Crimea by the Administration of the Novokrymsky Rural Settlement.

A similar note was shared by Eduard Zhuravlev from Crimea. The content is virtually identical, and supposedly comes from Sergey Abisov from the Crimean Ministry of Internal Affairs.

Much like the previous separatist dispatch, these documents have not been verified. However, the parallels of timing and content between the FSB account of “Ukrainian saboteurs” and these four men wearing Russian military uniforms is uncanny.

On August 9, Ukrainian official Anton Gerashchenko said that there were Russian soldiers who deserted and may attempt to enter Ukrainian territory. Gerashchenko went on to state that “these guys did not enter Ukraine” and that two border crossings between Crimea and the Kherson Oblast were closed. As with many other factors of the events in Crimea over the past week, it is unclear if these four men were Russian soldiers deserting, Ukrainians agents wearing Russian uniforms, or do not exist at all.

One of the only clear, concrete pieces of evidence is the existence of Yevgeny Panov, a Ukrainian truck driver who previously volunteered in the conflict zone in eastern Ukraine. He was captured by the FSB after the claimed attack in Armyansk on August 7. The VK account (archive) linked to this man (born 1977, living in the Zaporozhye Oblast) is under attack from pro-Russian/separatist users. The Ukrainian news site Strana.ua has reported that this same man, who works as a truck driver and was a volunteer in the ATO zone, was Yevgeny Panov who was arrested in Crimea. The FSB claims that he is an official of the Ukrainian Ministry of Defense. Russia’s state television service Vesti has published a photograph of a man who appears to be Yevgeny Panov:

There are six additional “saboteurs” who were captured by the FSB, per Russian media. Because of the arrest of Panov, it has become clear that the Armyansk incident was not invented by the FSB, as many have claimed online, though details provided are difficult to verify.

Outside of the competing narratives of terrorist attacks, saboteurs, and deserting soldiers is a more mysterious event: the sudden build-up of Russian military equipment in Crimea, including transport of the Bastion-P coastal missile defense system (NATO designation “SS-C-5 Stooge”).

On August 7, a series of videos and photographs were shared online of Russian military equipment moving towards or through Crimea. The materials were supposedly taken the previous day, August 6. Some media reports indicate that some movements may be part of a planned rotation.

Over the following two days, a deluge of photographs and videos appeared online documenting the movement of other military vehicles, including the Bastion-P mobile coastal defense missile system, moving through Crimea towards Simferopol.

Today, state newspaper Rossiyskaya Gazeta stated that the Ukrainian “saboteurs” planned on destroying the road between Simferopol and Yalta — the same highway of many of the sightings of Russian military equipment. This plan only came about after local residents alerted the FSB to the supposed Ukrainian saboteurs on the night of August 6, yet it is difficult to imagine that the mass mobilization of equipment across the Kerch ferry and through Crimea came about after and entirely due to this incident.

The available open source materials help us understand the ongoing situation in Crimea, but raise as many questions as answers. A separatist account of fighting and “mass shelling” between Ukrainian and Russian armed forces eventually became part of the official FSB narrative, but no additional reliable materials corroborate the story. Just as confusing, the story about a number of men — between four and twenty, depending on the narrative chosen — wearing Russian military equipment near Armyansk continues to be unclear. Panov appears to be one of these men, but there has been no definite confirmation that he was wearing a Russian military uniform. In the coming days, additional details will likely emerge from Russian media regarding the supposed Ukrainian saboteurs. For ongoing updates on the situation, continue to follow the Digital Forensics Research Lab, along with others monitoring the situation, including @LiveUAMap and RFERL’s “Krim Realii.”

Follow the latest Minsk II Violations via the @DFRLab’s #MinskMonitor.

For more indepth analysis from our regional experts follow the AtlanticCouncil’s Dinu Patriciu Eurasia Center. Or subscribe to UkraineAlert.

Information has been added to this post since its original publication, including further information on Yevgeny Panov from Russian state media, reports regarding military movements, and witness/news reports of gunfire in Armyansk on August 7.