Palestinian children detained in 2013 by Israeli military forces faced violence in the hands of their captors at shocking rates, a new report finds.

Three out of four Palestinian children detained by the Israeli military in the West Bank last year were forced to endure physical violence during their arrests and interrogations, reveals the Defense for Children International-Palestine in a study released Thursday

Furthermore, night arrests jumped to 56.1 percent from 45.2 in 2012, according to 98 affidavits by children between the ages of 12 and 17 that were analyzed by DCI-Palestine. Israeli forces held children in solitary confinement for an average of ten days in 21.4 percent of all cases.

DCI-Palestine’s findings follow a year-end review by the Public Committee Against Torture in Israel highlighting reports of widespread torture of Palestinian prisoners, many of them children, including placing prisoners in outdoor cages during winter.