Islamabad, Aug 1 - Six people, including three members of a family, were killed when a five-storey building collapsed in the southern Pakistani city of Karachi, a media report said Saturday.

The building collapsed Friday night in the Mithadar area of the city, Geo TV reported.

Eyewitnesses said more than 30 people were in the building when it collapsed. They said several people remained trapped under the rubble.

The residents from a nearby building were evacuated after the structure was declared unsafe.

Officials said it will take several hours to remove the debris.