Quetta, Pakistan (CNN) At least 149 people were killed and 186 injured in a suicide attack in Pakistan that targeted the convoy of a political candidate in this month's general election, according to Qaim Lashari, the Deputy Commissioner of Balochistan's Mastung region.

It was the second deadliest terror attack in Pakistan's history.

Nawabzada Siraj Raisani, who was campaigning for an assembly seat in the southern province of Balochistan, was killed in the bomb blast along with dozens of others, Balochistan Home Secretary Haider Ali Shikoh told CNN.

Agha Omar Bangulzai, the caretaker Home Minister of Balochistan province, told CNN that more than 200 people were also injured in the explosion, which occurred in the Mastung area, close to the provincial capital Quetta.

Most of the wounded were taken to Quetta Civil Hospital, where many are recovering from burn injuries, according to Dr. Faheem, the head of the trauma unit at the hospital.

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