A Syrian man decapitated his 15-month-old nephew with a knife before his mother's eyes at a supermarket in Jeddah, according to an Arab News report.

The 25-year-old man beheaded the baby following a dispute with his sister and brother-in-law in front of stunned shoppers at the Al-Marhaba supermarket Tuesday morning, police say.

"The murderer was in a dispute with the boy's mother and her husband," a police officer who would not release his name told Arab News. "He chopped off the boy's head in front of the mother to get back at her."

The baby's mother and a nearby shopper fainted while other witnesses stood in shock over the grisly murder. The mother is hospitalized.

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