Pakistan Prime Minister Shehbaz Sharif visited Balochistan province on Thursday, as dozens of people rescued from a train hijacked by separatist militants arrived in Quetta after security forces killed 33 attackers to end a day-long standoff.

Pakistani security forces are carrying out a rescue operation to free dozens of passengers taken hostage by separatist militants who hijacked their train in the southwest of the country on Tuesday. Here is a look at what happened,