A Ukrainian drone onslaught connected Engels bomber basal successful southbound Russia has near 3 radical dead, Moscow says.
Air defences reportedly changeable down the drone but falling debris caused the casualties successful the overnight attack.
Russia accuses Ukraine of carrying retired a akin onslaught connected the airfield, location to strategical bombers, connected 5 December. The basal lies astir 500km (310 miles) north-east of the borderline with Ukraine.
The Ukrainian subject has not officially commented connected those attacks.
Russia's defence ministry says its aerial defences changeable down the Ukrainian drone flying astatine debased altitude astatine astir 01:35 section clip connected Monday (22:35 GMT Sunday).
Three Russian servicemen died of injuries caused by drone debris, it adds.
Earlier, societal media users posted videos wherever what dependable similar blasts and aerial sirens tin beryllium heard astatine the Engels airfield.
The politician of Saratov portion said determination was "no menace to residents" of the municipality of Engels itself.
In the erstwhile reported onslaught connected 5 December connected the airfield and different aerial basal successful the Ryazan region, 3 servicemen were besides killed by debris from a downed Ukrainian drone, Moscow said astatine the time. Two craft were lightly damaged.
The Ukrainian subject made nary remark connected the reported attacks.
The Engels aerial basal has been repeatedly utilized by Russia to transportation retired rocket strikes connected assorted targets successful Ukraine since Moscow launched its full-scale penetration connected 24 February.
The Kremlin has accused Ukraine of attacking its territory before, but the alleged attacks successful December are deeper into Russia than erstwhile ones.
A fig of subject experts successful Ukraine and the West person described the reported strikes arsenic embarrassing for the Russian military.