A teenager who battered his father with a hammer the day after slamming his mother's head in a door is behind bars.

Lewis Buchan attacked Ann Hunter after coming home in a foul mood from walking the family dog.

Ms Hunter sent the 19-year-old back outside to calm down but instead he grabbed her by the hair, dragged her around the room and threw her on to a bed.

He then pulled open the front door and deliberately slammed it in her face, trapping her between the door and frame.

Buchan then stormed out and did not return until 3.30pm the next day.

Fiscal depute Eilidh Robertson told Dundee Sheriff Court: "At that time he met his father, Charles Buchan, near his mother's house.

"He was overheard saying to the accused 'look what you did to your mum'.

"The accused then shouted 'I'm not scared of you dad' and shouted 'come on' while gesturing his father to fight. They began to struggle and his father was knocked to the ground.

"The accused then punched and kicked him on the head and body then began to strike his father with a hammer on the head, his back and body whilst his father lay curled up in a ball on the ground.

"A witness told police 'it didn't seem like he wanted to stop. There were women in the street screaming and telling him to stop but he kept on hitting him'.

"The accused was later detained and responded to the charge of assault on his father by saying 'I think this is pretty funny, I didn't hit him with a hammer, he came at me with a hammer'.

"His father suffered a perforated left eardrum, a broken rib and cuts and bruises all over his head and body'."

Buchan, a prisoner at HMP YOI Polmont, pleaded guilty on indictment to assaulting his mother on June 12, 2016, his father on June 13, 2016, and breaching bail by failing to appear at court last year.

Defence solicitor John Boyle said: "Because of his age the court will require background reports."

Sheriff Alastair Carmichael deferred sentence until next month for a social work background report and remanded Buchan in custody meantime.