Nine Egyptian policemen have been arrested in an investigation into the death of a man in police custody in Luxor, officials said Sunday, after authorities vowed a crackdown on police abuses.

Nine Egyptian policemen have been arrested in an investigation into the death of a man in police custody in Luxor, officials said Sunday, after authorities vowed a crackdown on police abuses.

The nine, including three lieutenants and a captain, were arrested Friday and Saturday as part of a probe into the death of the 47-year-old man at a police station last month.

Their arrests came amid at least two investigations into deaths in police custody and after President Abdel Fattah al-Sisi last week warned that police officers found guilty of "committing mistakes" would be punished.

The official MENA news agency said the arrests were ordered after a forensic report revealed that the man had died after being beaten on his neck and back.

The nine policemen are suspected of either participating in the beating, approving it or not preventing it, a judicial official said, speaking on condition of anonymity.

The man had been arrested on Nov. 26 from a cafe in southern city Luxor and taken to the police station where he died an hour later.

Another police officer has been detained in a separate case of a veterinarian who died in police custody last month in the Suez Canal city of Ismailiya.