In a ghastly incident, a 19-year-old second-year PU student stabbed and killed a classmate inside their college toilet over an alleged love affair. The incident happened at a private college in Nagasandra in North Bengaluru on Wednesday around 8 a.m.

The deceased has been identified as Dayasagar S D, an 18-year-old student of Soundarya Composite PU college. The Bagalgunte police arrested Rakshith P soon after the incident and charged him with murder.

The police said that they suspect the involvement of another 17-year-old student who brought Dayasagar to the boys' toilet where Rakshith was waiting with a knife that he had brought from home.

When Dayasagar entered the toilet, Rakshith allegedly stabbed him in the neck. He died instantly from profuse bleeding, the police said.

A few other students who rushed to the spot informed college authorities and they called the police. Dayasagar was shifted to a hospital and was declared dead on arrival.

The police have confiscated the weapon. "We are conducting inquiries to find out whether the 17-year-old student had conspired with Rakshith or he took him to the toilet not suspecting what would happen. We are probing if he cooperated or assisted Rakshith in the murder," a senior police officer said.

The motive for the murder, the police suspect, is that the two youths were in love with a girl student of the same PU college whose identity the police did not disclose. "Rakshith and Dayasagar earlier on many occasions had skirmishes over the alleged affair. Every time they had confrontations, they had heated arguments and parted ways," said Chetan Singh Rathor, DCP North Division.

The body of Dayasagar was shifted to the MS Ramaiah Hospital for a postmortem. The Bagalagunte police have registered a case of murder and the investigation is ongoing.

Soon after the incident, Soundarya Composite PU college sent all the PU students home and declared a holiday. Their school, with standards 1 to 10, on the same premises functioned without disruption, the police said.