At least four people were killed in a helicopter...
The EFE news agency said a private helicopter belonging to the Saba pharmaceutical firm crashed at around 8:30 p.m. local time (01:30 GMT). A pilot and at least three passengers were on board.
The passengers are believed to be members of the Saba family, which has various business interests, including in pharmaceuticals and telecommunications.
It is as yet unclear what caused the crash.
MOSCOW, January 11 (RIA Novosti)