A woman who was found dead with stab wounds at a house in Watford on Monday (December 16).

A 17-year-old boy from Watford has been charged today (December 18) in connection with the murder.

Police were called at around 5.10 pm on Monday to a report of a woman with suspected stab wounds at a property in Watford.

A teenager who stabbed his mother 29 times with a large kitchen knife as she came home from her cleaning job.

On the day of the killing, 17-year-old Marcin Jakubowski had put in a search term on the internet asking: “How to hold a knife properly in combat?”

That afternoon when she arrived at the family home in Watford from her cleaning job, her beloved son carried out what a judge said was a “ferocious attack” with a large kitchen knife

Sentencing Jakubowski to a minimum term of 13 years and 223 days for Murder, Judge Michael Kay said: “Before your mother died, she must have suffered terrible mental anguish that she was being attacked by the son she loved and who she believed loved her.”

The court heard how he lived at the family home with his Polish parents and a brother.