A man, 18, was arrested in Kampong Chhnang province on Friday after a grenade attack killed a 69-year-old man and seriously injured five others.

Provincial police chief Prak Vudthy said teenager Khov Thim, from Teuk Phos district’s Chieb commune, was charged with intentional murder after allegedly throwing a grenade into a nighttime dance party.

“The suspect is being detained at Kampong Chhnang provincial prison because of intentional murder,” Vudthy said.

District police chief Khem Vibol said the attack followed an argument between the suspect and a group of men over loud music. The dispute allegedly ended in the suspect being beaten up.

“The case was caused by spite,” Vibol said.

Thim allegedly found the grenade in a field some months ago when tending to his cows and kept the weapon in his house, Vibol added.

The victim of the attack, Phok Khat, was cremated on Sunday, while the five injured were recovering in hospital.