Authorities in northwestern Pakistan say the death toll from twin bombings in the city of Peshawar late Saturday has reached at least 32.

Local authorities say more than 80 people were wounded in the explosions that went off minutes apart. They say the first blast was relatively small and drew police, rescue workers and onlookers to the site. A large explosion rocked the area minutes later, causing the casualties.

The nature of the blasts is not known and no one has claimed responsibility.

The explosions came hours after visiting Afghan President Hamid Karzai called on Pakistan to eradicate militant safe havens from tribal areas along the Afghan-Pakistani border.