This from the Los Angeles Times:
Militants in the eastern city of Lahore lay siege on two mosques belonging to a minority sect Friday, killing at least 52 people in a pair of highly coordinated attacks that exposed the vulnerability of groups considered outside the mainstream of Pakistani society.
The sect targeted, the Ahmadis, is one of the country's most beleaguered minority groups. Numbering about 4 million, Ahmadis consider themselves Muslims but believe their late 19th century founder, Mirza Ghulam Ahmad, was a prophet of God, a belief condemned by many Pakistani Muslims who regard Muhammad as Islam's final prophet. The group has been heavily discriminated against in Pakistan and is legally barred from calling themselves Muslims.