A 16-year-old boy allegedly killed his younger brother over money-related dispute in Raipur district, police said on Wednesday.

The incident took place at village Nimora on the intervening night of Tuesday and Wednesday, said a senior police officer.

The victim allegedly spent money carelessly and would ask his brother for money often, as per preliminary probe. The two brothers had a spat over the issue on Tuesday.

At night, the accused hit his younger brother with a pickaxe while the latter was asleep, the official said, adding that he has been detained and probe is on.