Mumbai:
A security guard at an Air Force station in Santacruz, in suburban Mumbai, gunned down two other guards early today morning, said the police.
The guard, R S Yadav, allegedly fired seven rounds at his colleagues, killing two of them and injuring two others.
Mr Yadav allegedly fled from the spot but was later arrested from Goregaon, another Mumbai suburb.
The two guards killed in the incident have been identified as Som Datta and H K Singh.
The police is trying to ascertain the motive behind the incident.
A case has been registered at the local police station in Vakola.