A UN human rights group has accused Israel of abuses against Palestinian children that include torture, solitary confinement and threats of death and sexual assault in prisons.

In the report released on Thursday, the UN Committee on the Rights of the Child said it expressed its "deepest concern about the reported practice of torture and ill-treatment of Palestinian children arrested, prosecuted and detained by the military and the police".

The committee said soldiers arrested Palestinian youth regularly during night-time raids, tying the childrens' hands painfully and blindfolding them, and often transferring them to detention centres without informing their parents.

It also said that arrested Palestinian children were subjected systematically to physical and verbal abuse, threatened with death, physical violence, and sexual assault against themselves or members of their family, as well as having access restricted to toilets, food and water.

"These crimes are perpetrated from the time of arrest, during transfer and interrogation, to obtain a confession but also on an arbitrary basis as testified by several Israeli soldiers as well as during pre-trial detention," said the committee.

It had obtained its information from other UN rights bodies, military sources and Israeli and Palestinian rights groups. Israel did not cooperate with requests for information on the issue, it said.

Child prisoners

Besides spotlighting abuses in the occupied Palestinian territories, it also expressed grave concern at the number of Palestinian children who have been held in Israeli jails.

It said that an estimated 7,000 kids aged from 12 to 17 years, but sometimes as young as nine, have been arrested, interrogated and detained since 2002 - an average of two per day.

Most were taken in after being accused of throwing stones at Israeli forces and settlers, an offence which can carry a 20-year penalty.

In April this year, 236 children were in military detention centres, with dozens aged between 12 and 15, the report said drawing on data from UNICEF and Israeli rights group B'tselem.

The committee expressed its "deepest concern that children on both sides of the conflict continue to be killed and injured", but underlined that kids in the occupied territories were "disproportionately represented among the victims".