MOSCOW: Eight suspects have been detained in connection with a deadly explosion on a bridge connecting Crimea to Russia.
Five Russians and "three Ukrainian and Armenian nationals" are among the suspects, the report said without going into further detail.
It said that 22 plastic film rolls weighing 22,770 kg (50,200 lb) were used to conceal the explosives.
Also Read: Occupying forces in Ukraine close churches and detain pastors
Rolls traveled to Bulgaria in August by boat from the Ukrainian port of Odessa. Then, according to the FSB, they traveled through the port of Poti in Georgia, before being deported to Armenia and finally arriving in Russia by road.
According to the FSB, the explosives arrived in the Krasnodar Territory on October 6 - two days before the explosions - after leaving Russia in a truck with a Georgian license plate on October 4.
According to the FSB, the "terrorist attack" was planned by the Ukrainian secret services, and a Kyiv agent supervised the transportation of the explosives.
Three people were killed, property damaged and a massive fire broke out on Saturday at a road and rail bridge connecting Crimea with Russia.
Also Read: Elon Musk disputes claims that he spoke with Vladimir Putin prior to his peace tweets
The bridge is essential to Moscow's logistics as it serves as a major transport route for carrying military supplies to Russian troops fighting in Ukraine.
Given that President Vladimir Putin personally opened the building in 2018, it's also incredibly symbolic.
Also Read:Zelensky asks the G7 for Ukraine's "air shield" and warns that Putin may escalate the conflict
The explosion sparked celebration among Ukrainians. Taking responsibility for Sunday's blast, Russia launched missile strikes across Ukraine on Monday. At least 19 people were killed and more than 100 were injured.