The mother of the one and a half year old daughter who was killed by her father in the Moraada area in Piliyandala has also been arrested.
This is for attempting to conceal facts of a murder.
The post mortem examination on the child was held at the Colombo South Teaching hospital.
It revealed that a severe blow to the stomach of the little girl had resulted in internal bleeding leading to the child’s death.
Meanwhile, the father suspected of murdering his child by assaulting her had committed suicide by hanging himself.
According to the Police Media Unit the body of the suspect was recovered from a house at the Palagama area in Kahathuduwa this morning.