Mukaddas Garba, the commissioner of police in the state, informed NAN of the development in Makurdi.
The commissioner said the incident occurred during the burial of one late Tor Amaafu.
Garba said the police has commenced an investigation into the matter, assuring that the perpetrators will be brought to book.
He urged the public to assist the police with relevant information that would lead to the culprits’ arrest.
Meanwhile, an eyewitness told NAN that the gunmen, numbering over 10, opened fire on the mourners and killed some of them while others sustained injuries.