The murder-suicide occurred on Sunday night, according to police, when the 59-year-old teacher arrived at the residence of his ex-girlfriend, who was having dinner with her new partner and another male friend.
Armed with a .22 caliber rifle, the teacher forced the two men to leave, and then shot his former partner, and the mother of their two-year-old daughter, in the chest, killing her instantly.
The man then turned the rifle on himself, shooting himself in the head.
The woman, 35 years old and also a teacher by profession, had recently broken up with him, saying she was starting a new life with another man.
Their child was found in one of the rooms of the residence, despondent but unharmed.