Three persons were killed and nine others injured when an old building collapsed at Zakir Hussain slum area here, with several people feared trapped inside, police said on Saturday.
The four-storeyed building collapsed at about 10.30 pm on Friday night, a police official said.
As fire brigade personnel and locals joined hands in rescue operation, the authorities sought the help of the Army in the wee hours this morning.
So far, three bodies were recovered. Nine injured people were rescued and admitted to hospital, the official said adding that rescue work was continuing as several people were feared trapped inside.