A 16-year-old schoolboy, believed to be from South Yorkshire, has been arrested on suspicion of stabbing his own mother to death in a Dorset seaside town.
Police received a report that a woman had been injured at an address in Benville Road, Weymouth, on Saturday.
When officers arrived they discovered the body of a middle-aged woman.
The youth, understood to be from Doncaster, was later arrested and taken into custody.
He was still being questioned last night.
Locals told reporters the teenager and his mother were originally from Doncaster.
Police confirmed the woman’s death was being treated as suspicious and officers, assisted by the force helicopter, searched the surrounding area.
Armed police officers who were seconded in for the Olympics were involved in the search for the teenager, who was arrested at Portland.
Meanwhile officers performed house-to-house enquiries in and around Benville Road.
A cordon was put in place around the property while forensic experts in white suits examined the scene.
A spokeswoman for Dorset Police said: “At 1.06pm on Saturday, July 21, Dorset Police received a report that a woman had been injured within an address.
“Officers attended and the body of a woman was discovered.”
Detective Inspector Marcus Hester, of Dorset Police’s Major Crime Team, said: “I can confirm that Dorset Police has launched an investigation into the circumstances surrounding the discovery of the deceased woman.
“As a result, members of the public may have noticed increased police activity within the Weymouth area.”
DI Hester continued: “Even though someone has been arrested, I would still like to speak with anyone who saw anything suspicious or unusual in the Benville Road area between 11am on Friday 20 July and 1pm on Saturday 21 July 2012.”
Neighbours in a nearby block of flats said they were shocked.
One woman at the scene said: “I think it is the mother that was stabbed and her boy ran off and police went looking for him.”
“We were asked to stay out of our flats whilst the police carried out a detailed search.
“It is very shocking.
Police said the woman’s relatives had not yet been informed.