The United States is moving to deport at least 150 Bosnians suspected of taking part in war crimes and ethnic cleansing in the former Yugoslavia in the 1990s, the New York Times reported Saturday.

The report said U.S. immigration officials had identified about 300 immigrants believed to have concealed their involvement in wartime atrocities, but the number could eventually top 600.

Four people illegally extracting coal from an opencast mine in Bosnia have been killed in a slag heap slide, authorities said Sunday.

The bodies of the victims were found buried under the mine waste after a day-long search and taken to Tuzla university hospital for an autopsy, police spokesman Izudin Saric told reporters.

Bosnian police on Wednesday arrested six people on suspicion of planning to travel to Syria to join the Islamic State group or organizing the trips, prosecutors said.

Bosnia's prosecutor said in a statement the six were members of "radical religious movements" and that some were on their way to Syria where they intended to join the forces of Islamic State group".

Police special forces carried out a raid Thursday in a Bosnian village home to Muslim fundamentalists, after media published photos of local houses displaying the flag of the Islamic State group.

By the time forces arrived "the flags were no longer hanging" in the northeastern village of Gornja Maoca, said Kristina Jozic, a spokeswoman for state police agency SIPA.

The U.N.'s highest International Court of Justice on Tuesday hands down its ruling in a long-running genocide case that could reopen old wounds between former foes Croatia and Serbia.

Zagreb in 1999 dragged Belgrade before the ICJ on genocide charges relating to Croatia's war of independence that raged in 1991-95 following the collapse of the former Yugoslavia.

A radical Muslim leader pleaded not guilty in a Bosnian court Monday to charges of inciting terrorism for having encouraged his followers to fight alongside jihadists in Syria and Iraq.

The radical cleric, Husein Bosnic, was arrested last year and charged with urging followers to leave for Syria and Iraq to fight with Islamic militants when he preached in several Bosnian towns in 2013 and 2014.

A radical Muslim cleric in Bosnia accused of encouraging his followers to fight with Islamic State militants in Syria and Iraq was charged with terrorism on Thursday, prosecutors said.

Husein Bosnic, from Buzim in the country's northwest, was arrested in September. Authorities said a number of his followers travelled to Iraq and Syria to fight alongside militants, with some killed there.

Bosnian police on Tuesday arrested 10 former high ranking Bosnian Serb police and soldiers suspected of killing dozens of Muslim civilians at the start of the country's 1992-1995 war.

Bosnian prosecutors on Friday indicted 15 former ethnic Serb police officers and soldiers for killing more than 150 Muslim civilians at the start of the country's inter-ethnic war in the 1990s.

"It is one of the largest indictments for war crimes in the region of Prijedor" in northwestern Bosnia, a prosecutors statement said.

An unprecedented joint investigation by former foes Serbia and Bosnia culminated Friday in the arrests of 15 people suspected of kidnapping and murdering nearly two dozen Serbs in an attack during the 1992-1995 Bosnian War, officials said.

The arrests over the 1993 attack on a train transporting Serbs along the border with Bosnia took place in coordinated raids in both jurisdictions.