AIZAWL: A 16-year-old boy, who wanted to purchase a mobile handset, allegedly killed his sister and brother-in-law and looted Rs 36,000 from them in a village in the district, police said here on Wednesday.

The 16-year-old boy confessed to the Juvenile Justice Board on Tuesday that he had killed the couple on July 7 and took away Rs 36,000, said Aizawl district SP C Laldina.

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The boy was arrested from his home a day after the crime, Laldina said.

Laldina said quoting the boy as having told the board members that he had been given a single-barrelled gun to hunt animals in the jungle surrounding his village and was overcome by the temptation to rob his step-sister so that he could buy a mobile phone.

"The boy went back, gunned down the husband and hit his step-sister with a firewood," his interrogators said adding that he also inflicted several injuries with an axe.

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The couple recently received Rs 66,000 from the government after being selected as the beneficiary of the state government's flagship programme — the New Land Use Policy of which they had already spent around Rs 30,000 and the rest stolen by the accused.