DHAKA, May 4 (Xinhua) -- Gunmen attacked mourners Friday at a funeral in Bangladesh's southeastern Chittagong Hill tracts, combining three hilly districts of Bandarban, Rangamati and Khagrachari, killing five people and injuring six others.

The victims were attending the funeral for a slain local chairman when gunshots rang out at around 12:20 p.m. local time on Friday.

Alamgir Kabir, superintendent of police in Rangamati where the incident happened, told local media that unknown attackers opened fire on the mourners, leaving four dead on the spot.

Another person who was seriously injured in the attack died later at a hospital, he said.

No one, nor any group, has so far claimed responsibility for the attack.