One person has been killed after blasts rocked a military base in Crimea, the head of the Russia-appointed regional administration there said.
Sergei Aksyonov wrote on social media that the blasts had taken place at the Saky military base near Novofedorivka on the peninsula’s western coast.
Footage circulating on social media appeared to show multiple explosions.
Russia’s defence ministry later said ammunition was detonated, but this has not been independently verified.
The ministry said there was no “fire impact” on the ammunition storage area.
The Ukrainian peninsula that Moscow annexed in 2014 is a popular destination with Russian tourists, and one video appeared to show visitors fleeing from a beach as smoke rose in the background.
Local witnesses told newsmen that they heard at least 12 blasts, beginning at about 15:20 local time (12:20 GMT).
After arriving in the area, Mr Aksyonov said a 5km (three-mile) no-go zone around the blast site had been established.