A man believed to be involved in a robbery and the abduction of a 50-year-old woman from a house in Chiba Prefecture on Thursday morning turned himself in to authorities Friday in neighboring Kanagawa Prefecture, according to investigative sources.

Authorities are investigating whether the case is connected to a series of robberies across four prefectures in the Tokyo metropolitan area.

At around 7 a.m. Thursday, the 72-year-old mother of the woman returned home in the city of Ichikawa after a night shift and noticed that the front door was ajar, the house was ransacked and her daughter was missing, prompting her to call the police.