The first explosion happened in front of Malika Omaira girls' school in Jalalabad, the capital of Nangarhar province, at around 8:30am (0400 GMT), provincial governor spokesman Ataullah Khogyani told AFP..A second bomb went off as students from a neighbouring boys' school and locals gathered at the scene, Khogyani added.
Witnesses told AFP the casualties were students from the boys' school.
“We went with other boys to see what had happened after we heard an explosion near the girls' school,” 12-year-old Elyas told AFP from his hospital bed.
“Another explosion hit us and I was wounded (in the leg).
“I saw girls crying, rushing out of school. They were all in a panic.”
The twin blasts took place an hour after a bomb exploded outside Biba Hawa girls' school in nearby Behsood district, Jalalabad education department spokesman Asif Shinwari said.
Students had not arrived for class and there were no casualties, he added.
There was no immediate claim of responsibility for the latest attacks in Nangarhar, but the Taliban and the militant Islamic State group are active in the region.
Both militant groups have long opposed female education and have forced the closure of countless girls' schools across Afghanistan.
