Ten people were injured and one killed when a multi-story building being built in the south of Moscow collapsed suddenly Tuesday.
The six-floor building, owned by real estate investment fund Horizon, collapsed as workers were carrying out construction at about 1:30 a.m., a statement by the Investigative Committee said.
All that remains of the building are a tangle of concrete, rebar, and finger-like columns that protrude from the rubble.
One worker who survived the collapse was shown on state television looking dazed, and rescuers said the man was lucky to have survived, a report on Channel One said.
The victims were workers from Central Asian countries, Investigative Committee spokeswoman Victoria Tsyplyenkova told RIA-Novosti.
An investigation into the cause of the collapse has been opened, which could result in criminal charges for violating construction safety rules. The immigration status of the workers is also under question.
Investigators are taking steps to obtain documents related to on-site contractors and the builders responsible for construction.