DUMAGUETE CITY - The Commission on Human Rights (CHR) in Negros Oriental is investigating an alleged mauling incident during an inspection by jail officials at the Dumaguete City Jail on Monday.

The incident happened during a surprise visit by personnel from the Bureau of Jail Management and Penology (BJMP)-Negros Island Region to the jail's male dormitory.

After an hour of searching, operatives confiscated drug paraphernalia and a bladed weapon inside the city jail.

CHR Negros Head Investigator Dr. Jesus Canete said he received information from the male dormitory warden that a mauling incident occurred during the operation dubbed Oplan Galugad.

He also talked with around 20 detainees who were allegedly hurt during the greyhound operation.

According to Canete, the detainees showed him their wounds and bruises as the result of the supposed attack.

In an interview with ABS-CBN News, Jail Warden Sr. Insp. Rolly Bandeling said he did not receive prior information about the inspection.

He added that they were not involved in the operation, but stayed in the jail's receiving area.

CHR Negros will request a medical examination for the detainees. The agency will also get the names of the 40 BJMP personnel who conducted the operation, to get their account of the events.