KUNDUZ, Afghanistan, July 19 (Xinhua) -- At least 17 insurgents have been killed and over a dozen others injured after Afghan security forces repulsed Taliban attacks on security checkpoints in the northern Kunduz province on Thursday, police said.

"A big number of Taliban militants attacked security checkpoints in Imam Sahib district at 1:30 a.m. local time today but their vicious designs have been foiled and the militants after suffering casualties and leaving 17 bodies behind fled away," the police said in a statement.

The statement, however, didn't mention if there were casualties on security personnel.

Meantime, Mahboudullah Sayedi, the governor of Imam Sahib district, told Xinhua that the fighting left three security personnel injured.

The official also said clean-up operations were underway to ensure lasting peace in the restive district.

Taliban militants who are in control of parts of the troubled Kunduz province haven't commented on the clashes.