At least 20 militants were killed and several others injured as some 100 militants attacked a checkpost early Wednesday morning in Pakistan's northwestern city of Peshawar, reported local Urdu TV channel DAWN.

According to the report, the attack took place in the wee hours of Wednesday when 100-plus militants reportedly attacked the Manzor Shaheed checkpost in the city.

Security forces there fought back, killing over 20 militants and injuring several others, said the report, adding that two security personnel were also killed in the crossfire.

Other details about the incident are not immediately available.