The court heard how Daniel Bartlam hit his mother seven times with a claw hammer at their home in Georgia Drive, Redhill, Nottingham.
He then poured petrol around her bedroom before lighting newspaper on a gas fire and setting the property alight.
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A doctor who lied and recorded a lower temperature for Ebola nurse Pauline Cafferkey on her return to the UK has been suspended for a month.
Emergency services were alerted to the crash at 3.50pm on Thursday, Sussex Police said.
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