A bomb blast outside a church in the Pakistani city of Peshawar has killed at least 60 people and injured more than 100 others.
They say two suicide bombers blew themselves up as people were coming out after Sunday Mass.
The victims were said to include women and children.
Islamist militants have been blamed for previous attacks on Pakistans Christians, who make up about 1.6% of the countrys mainly Muslim population.
No-one has admitted carrying out the attack.