KABUL (Reuters) - Torture and mistreatment of detainees by Afghan security forces is as widespread as ever, according to a U.N. report released on Monday, despite promises by Afghan President Ashraf Ghani and new laws enacted by the government.

Afghan National Police (ANP) officers march at a training centre near the German Bundeswehr army camp in Kunduz, northern Afghanistan December 3, 2012. REUTERS/Fabrizio Bensch

At least 39 percent of the conflict-related detainees interviewed by U.N. investigators “gave credible and reliable accounts” of being tortured or experiencing other mistreatment at the hands of Afghan police, intelligence, or military personnel while in custody.

That compares with 35 percent of interviewees who reported such ill treatment in the last U.N. report, released in 2015.

In response to allegations in the past, the Afghan government has acknowledged that some problems could be caused by individuals but not as any national policy.

“The government of Afghanistan is committed to eliminating torture and ill-treatment,” the government said in a statement.

The U.N. report comes as senior Afghan officials prepare to appear before the U.N. Committee Against Torture in Geneva this week to face a review of Afghanistan’s record of implementing anti-torture laws.

The International Criminal Court in The Hague is conducting a separate review of torture in Afghanistan.

“Notwithstanding the government’s efforts to implement its national plan ... the present report documents continued and consistent reports of torture and ill-treatment of conflict-related detainees, mainly during interrogation, and highlights a lack of accountability for such acts,” U.N. officials concluded.

Over the past two years, investigators interviewed 469 detainees in 62 detention centers across Afghanistan.

The report’s authors noted an alarming 14-percent spike in reports of torture by Afghan National Police, at 45 percent of those interviewed.

More than a quarter of the 77 detainees who reported being tortured by the police were boys under the age of 18, according to the United Nations.

A force known as the Afghan Local Police severely beat almost 60 percent of their detainees, according to the interviews carried out by U.N. investigators.

Nearly 30 percent of interviewees held by Afghanistan’s intelligence agency, the National Directorate of Security, said they had faced torture or mistreatment.

Afghan National Army soldiers were also accused of mistreating some detainees, but the prisoners held by the army usually fall in categories less vulnerable to torture, the United Nations noted.

The majority of detainees who were tortured said it was to elicit a confession, and the ill treatment stopped once they signed a written confession, which in many cases, they could not read.

“Torture does not enhance security,” U.N. High Commissioner for Human Rights Zeid Ra’ad Al Hussein said in a statement. “Confessions produced as a result of torture are totally unreliable. People will say anything to stop the pain.”

Among the methods described in the report were severe beatings to the body and soles of the feet with sticks, plastic pipes or cables, electric shocks, including to the genitals, prolonged suspension by the arms, and suffocation.