RAMALLAH -- A prisoners' rights group said Friday that nearly 400 Palestinian children between the ages of 11 and 17 are currently being held in Israeli jails.

The Palestinian Prisoners' Society said in a statement that 11 of those detained were being held without charge or trial under administration detention orders.

The group added that several children detained since the start of last month were hit with live Israeli fire while being detained.

Some 700 children have been detained since the beginning of October -- mainly in the Hebron and Jerusalem districts -- many of whom were released under specific conditions including bail or house arrest, the society said.

Palestinian children living in the occupied West Bank are prosecuted in the Israeli military detention system, a system which rights groups say lacks reliable due process and systematically mistreats Palestinians.

The number of children held in Israeli jails nearly doubled between September and October of this year, according to documentation by rights group Addameer, amidst an upsurge in violence.

Earlier this week video footage was released of Israeli forces detaining a six-year-old Palestinian boy in Bethlehem's Aida refugee camp. The boy was released after hours of interrogation.

The Palestinian Prisoners' Society said that many children recently detained were kept in interrogation and detention centers for up to two days without food or drink, were beaten and verbally abused, and detained in poor conditions.

The majority of children detained were held in Israel's Etzion detention center while others were held in HaSharon, Ofer, Megiddo and Givon detention centers, the Palestinian prisoners' society added.