A private tutor was Tuesday arrested here on charges of killing his student, a Class 12 girl along with her brother, police said.

Tarachand Bairwa, 25, had developed a relationship with Bhagya Shree while giving her tuitions and killed her on the suspicion that she had become friendly with someone else, police said. The incident took place Monday in city's Sanganer area.

The girl's brother, Chandra Shekhar Sharma, had recenty come to know about the relationship between Bairwa and her sister, so the teacher killed him as well.

"The girl's throat had been slit using a sharp-edged weapon," said the official.

"Tarachand called her brother to a play ground and stabbed him to death as well," said the official.