PESHAWAR: Three people, including two CounterTerrorism Department personnel, were injured on Monday after a blast hit their vehicle when they were returning from the site of an earlier explosion that occurred outside a girls` school, police said.

A police official at the Urmur police station said that the first blast took placein front of Government Girls` Primary School, Baghbanan.

`It was an IED device, planted next to the school gate,` the official said, adding that the explosives went off at around 4:30am.

He said no students were injured as the school was yet to open and only the school gate was damaged.

He said that following the explosion, the bomb disposal unit (BDU) found another device planted inside the school, which they defused.

A CTD official told Dawn that both devices weighed around two and a half kilograms.

He said that an FIR had been registered and investigation was under way.

A CTD team after inspecting the damage at the school gate was returning when an improvised explosive device (IED) ripped through their vehicle in the Khattako Pul area in the Chamkani police limits.

Two CTD employees and a passer-by sustained minor injuries.

The injured cops were identified as Nigar Ali and Akbar and the passerby as Wali Rehamn. They were taken to the Lady Reading Hospital.

An official said that apparently both the attacks were interlinked and the militants wanted to target police or security personnel heading to the area after the first blast.

`Explosives used in the blast were of lower quality, he said.

No group has yet claimed the responsibility for the attack.