A suicide attack on protesters and a bomb blast in front of a girl's school in eastern Afghanistan killed at least 33 people on Tuesday as a recent wave of attacks across the country continued.

A suicide bomber targeted a group of men demanding the dismissal of a local police commander in Nangarhar province's Achin district, Ataullah Khogyani, the governor's spokesman, told Al Jazeera.

Thirty-two people died and at least 130 people were wounded in the blast.

"All people killed were civilians in the attack," Khogyani said, adding a number of wounded were in critical condition.

Local media reported hundreds of protesters from Achin district gathered in Mohmand Dara district near the Jalalabad-Torkham highway when the bomber detonated explosives. The reason for the demonstration against the police chief was not immediately clear.

The deadly suicide attack came hours after multiple bombings targeted schools in Nangarhar's capital, Jalalabad.

One blast went off at the entrance of Malika Omaira girls' school in the morning, killing a 14-year-old boy and wounding four other people. It was followed by two explosions in Behsud district, also near two schools. (Aljazeera)

•Medical staff struggled to treat 130 people wounded by the powerful blast in Nangarhar province on Tuesday [AFP]