Firemen and rescue workers look for survivors amid the debris of houses after a mudslide in a slum in Mumbai September 4, 2009. [Agencies]

MUMBAI: Heavy rain triggered a landslide in a densely populated Mumbai slum killing at least 12 people and injuring 25 others, a police official said Friday.

Police, firefighters and slum dwellers pulled 25 people from the debris but many others remained trapped under piles of mud and stones, he said.

Firefighters and volunteers worked through the night to pull survivors from the mud although their efforts were hampered by incessant rain, Pawar said.

Sakinaka is around 23 miles (35 kilometers) from downtown Mumbai, India's financial hub.