In pictures: Pakistan church blast

At least five people have died in a grenade attack on a Protestant church in the Pakistani capital, Islamabad.

The church, inside the city's heavily guarded diplomatic enclave, was crowded with Sunday morning worshippers.

Relatives of victims cannot hide their grief...

... after a simple church service ended in carnage

The attackers evaded security guards

There was grim evidence of the bloodshed everywhere

The dead were taken away on stretchers

Other casualties were rushed to hospital

US officials began an immediate investigation

Pakistani police are hunting the bombers