Police in Kenya have arrested a 23-year-old man, Mark Njuguna for allegedly killing his four-month-old son.

According to a video that is making rounds on  the social media, Njuguna is seen physically assaulting his wife Mary Muthoni, with a belt while their baby is crying on the floor after which he grabbed the infant, who he claims is not his biological son.

He tossed him over the sofa and the baby died after landing on the concrete floor.

The woman managed to run away and noticed the mother of the man.

According to sources, the two are believed to have picked a quarrel after the man questioned whether he is the biological father of the boy.

The body of the boy was taken to General Kago mortuary awaiting postmortem.