A mentally challenged youth allegedly killed his parents on Thursday and injured three other persons in the hilly Doda district of Jammu and Kashmir.

Firdous Ahmed, 25, stabbed his father and mother to death and injured three other persons in the Thathri area of Doda district of Jammu region on Thursday morning, police said.

"The accused has been arrested and investigations started in this incident," police here said.

The injured persons have been shifted to hospital for treatment.

--IANS