Pakistan says its security forces have arrested at least six members of an outlawed Sunni Muslim militant group suspected of involvement in two deadly attacks against minority Shi'ite Muslims.
More than 100 people were killed in those attacks.
Authorities say the men -- all members of Lashkar-e-Jhangvi -- were arrested Monday night in a series of raids southeast of Quetta, the capital of southwestern Baluchistan province.
In a separate incident in Islamabad (Tuesday), two people were killed and several others injured when unidentified gunmen opened fire on a funeral procession. The incident occurred at the Sunni Muslim Bari Imam shrine, and its custodian was among the dead.
The violence comes as Shi'ite Muslims observe their religious month of Muharram to mourn the seventh century death of Hussein, grandson of the Prophet Muhammad.