Prosecutors at the International Criminal Court in The Hague said on Monday there were preliminary grounds to believe U.S. forces committed war crimes in Afghanistan and at secret detention facilities elsewhere in 2003 and 2004.

In a report, prosecutors said there was a “reasonable basis to believe” that U.S. forces had tortured prisoners in Afghanistan and at Central Intelligence Agency detention facilities elsewhere in 2003 and 2004.

“Members of US armed forces appear to have subjected at least 61 detained persons to torture,” the prosecutors’ office, wrote. It added that CIA officials appeared to have tortured another 27 detainees.

The prosecutors’ office, headed by Prosecutor Fatou Bensouda, said it would decide imminently whether to pursue a full investigation.