Authorities in southwestern Pakistan have stopped running all trains at night, following two bomb blasts on a railroad since Saturday.
Announcing the change on Tuesday, railway officials in the restive Baluchistan province said that -- for the time being -- all trains will operate during daytime only.
Although the officials did not give a reason for rescheduling, the move follows a bomb explosion late Monday on a railroad bridge near Sibi, a town about 150 kilometers southeast of the provincial capital, Quetta. The blast injured five railway engineers.
The same line was hit by another explosion Saturday. The track was damaged but no one was hurt.
A little-known nationalist group, the Baluchistan National Liberation Army, has claimed responsibility for Monday's blast.