A bomb attached to a bicycle injured at least 12 people at a Pakistani police checkpoint in the southwestern city of Quetta Monday, police said.

The bicycle was parked at the checkpoint and its four-kilogram (8.8 pound) bomb was detonated by remote control, Quetta police chief Mir Zubair Mehmood told AFP.

Gunmen shot dead seven Shiite Muslims in two separate incidents in Pakistan's troubled southwestern province of Baluchistan on Saturday, police said.

The incidents took place near Quetta, the capital of the oil and gas rich province, which is plagued by sectarian violence.

Gunmen on Saturday shot dead seven Shiite Muslims in two separate incidents of sectarian violence in Pakistan's troubled southwestern city of Quetta, police said.

The drive-by shootings took place in Quetta, the capital of Baluchistan province bordering with Iran and Afghanistan .

A bomb ripped through a military vehicle Saturday killing two Pakistani soldiers in a village in the restive northwestern tribal area bordering Afghanistan, a security official said.

The remote-controlled bomb planted on a roadside hit a patrol party leading a convoy of security forces at Boya village, some 20 kilometers west of Miranshah, the main town of troubled North Waziristan tribal district.

A car bomb killed at least eleven people on Wednesday and wounded 22 more in a Shiite Muslim area of the restive southwestern Pakistani city of Quetta, police said.

The bomb exploded in a parking lot after prayers marking the festival of Eid al-Fitr, senior police official Mohammad Hashim told Agence France Presse.