Two Filipino teenagers were arrested on Monday in San Jose del Monte in Bulacan, the Philippines, on murder charges.

On Monday, a 16-year-old suspect was arrested in Barangay Minuyan. According to police, the suspect was involved in stabbing another teenager in January, GMA News reported.

The teenager was stabbed in the chest while in front of his house. Police said the victim and the suspect had disputes for a long time and the suspect had planned the killing.

Police said they also arrested one of the suspect’s cohorts in Malolos. The two claimed they were defending themselves from their victim and his group, who had been making fun of them.

Orlando Castil, the chief of San Jose Del Monte police, said the suspect took advantage of the victim being home alone and committed the crime. Police said they are still looking for two more people involved in the crime.