Attack on Shiite Muslim mosque in Pakistan's capital kills 2, officials say

A Pakistani journalist mourns over his father's death from an attack on a Shiite mosque, at a local hospital in Islamabad, Pakistan, Wednesday, Feb. 18, 2015. Score of people were killed in an attack Wednesday evening on a mosque in Pakistan's capital belonging to the Shiite Muslim community, in the latest act of violence to target the religious minority. (AP Photo/Anjum Naveed) (The Associated Press)

A Pakistani woman, comforts to her son as he mourns over his father's death from an attack on a Shiite mosque, at a local hospital in Islamabad, Pakistan, Wednesday, Feb. 18, 2015. Score of people were killed in an attack Wednesday evening on a mosque in Pakistan's capital belonging to the Shiite Muslim community, in the latest act of violence to target the religious minority. (AP Photo/Anjum Naveed) (The Associated Press)

Pakistani police officers stand guard while rescue workers wait for people who were injured from an attack on a Shiite mosque, at a local hospital in Islamabad, Pakistan, Wednesday, Feb. 18, 2015. Score of people were killed in an attack Wednesday evening on a mosque in Pakistan's capital belonging to the Shiite Muslim community, in the latest act of violence to target the religious minority. (AP Photo/Anjum Naveed) (The Associated Press)

Officials say an attack on a mosque belonging to the Shiite Muslim minority in the Pakistani capital has killed two people and wounded six others.

Ayesha Isani, the spokeswoman at the hospital in Islamabad where the dead and wounded were taken, gave the death toll.

Islamabad police official Waseem Ali said authorities believe a man opened fire on the mosque before throwing a grenade or other explosive device.

This is the latest in a string of attacks against Pakistan's Shiite Muslim minority, which Sunni extremists view as apostates.

There was no immediate claim of responsibility for the attack, which happened on the edge of the capital near the twin city of Rawalpindi.