BETHLEHEM (Ma'an) -- Three Palestinian children being held in Israeli custody were released on Friday, the Palestinian liaison department said.

Ahmed Abdel Raouf Burgan, 15, Ahmed Abdel Muti Abu Mayaleh, 13, and Mohammed Abdul Muti Abu Mayaleh, 13, were released after being arrested in Hebron this week, a statement said.

Twenty-year-old Muhammad Mahmou Abusackor was also released.

Israeli forces on Wednesday detained some 30 students who were on their way to school in the southern area of Hebron, locals said.

"This type of mass arrest of a group of minors, not on the basis of individual suspicions is unacceptable, even if the minors are formally over the age of criminal responsibility," B'Tselem said in a statement.