The deadliest terror attack in over a year has rocked Pakistan as bombs went off at two campaign rallies in different cities. The massive death toll climbed by the hour throughout Friday after a suicide bomber struck a convoy headed to an election-related event in Mastung near the southwestern city of Quetta, the capital of Balochistan Province.

Pakistani authorities said 128 were killed and over 150 wounded in a suicide attack reportedly claimed by the Islamic State (ISIS).

Some observers have noted that the spot is close to where Pakistani forces had previously claimed to have eliminated an ISIS base in the province. 

The attack targeted Siraj Raisani, a Balochistan Awami Party candidate for parliament running in the July 25 general elections, and his supporters. Raisani died as a result of the blast, which came after a motorcycle bomb attack earlier in the day in the northwestern town of Bannu targeted a convoy transporting former Housing and Works Minister Akram Khan Durrani, who escaped unharmed. At least four people died in the Bannu attack with at least 32 wounded.