This was the second act of arson targeting a girl's school in Pakistan in less than a week.

Some unknown attackers torched down another girl's institution in North Waziristan on Tuesday.

According to officials, the attackers entered the school in Killi Dhamb tehsil on We­­dnesday night and set the staff room on fire, reported Dawn News.

The fire left the staff room completely gutted.

The attackers managed to escape the place before police arrived at the spot.

Police have started an investigation into the incident.

Police and locals joined the dousing the flames.

A case under terrorism laws has been registered against unknown miscreants, and police have started an investigation, the newspaper reported.

Meanwhile, a former teacher has been arrested from North Waziristan for his alleged involvement in burning down a girl's school in Razmak region on Tuesday.