UPDATE 5: The gunman was identified as 18-yo Vladislav Roslyakov. He commited a suicide after the attack. One of the key questions surrounding the incident is that how and where Roslyakov has obtained an IED, which caused the explosion.
Some Russian experts suggested that the IED may have been provided to Roslyakov by Ukrainian intelligence services. One of the main reasons behind this version is that over the past few years, Russian security forces have detained a number of persons preparing terrorist attacks in the Republic of Crimea upon orders from the Ukrainian side.
UPDATE 4: After additional detains appeared, authorities started describing the incident as a mass murder, but not a terrorist attack.
UPDATE 3: The death toll grew to 18 people.
UPDATE 2: An alleged photo of the gunman.
UPDATE: According to authorities, the incident could be a terrorist attack.
On October 17, at least 10 people were killed and up to 50 others were injured in an explosion, which targeted a college facility in the city of Kerch, the Russian Republic of Crimea.
Initially the Russian media was reporting that the incident was caused by a gas explosion. Nonetheless, later the National Counterterrorism Committee clarified that an unidetified improvised explosive device (IED) was involved.
According to eyewitnesses quoted by the Russian media, a gunman was also involved in the incident. He had been in the building until police arrived the scene.
Security forces already surrounded the site. The security operation is ongoing.
Photos from the scene: