Fraser Smith, 17, appeared for sentencing at Dumbarton Sheriff Court, having previously pleaded guilty to acting in a threatening and abusive manner on July 23.

Jeanette McLean, fiscal depute, told the court that at the time, Smith had been living with his parents on West Princes Street.

His father had gone to pick him up from the train. He noticed Smith, now of Drumfork Court, appeared to be quite drunk and agitated.

The pair returned home and the family had dinner together.

The court heard Smith’s parents asked for his clothes to wash them. He refused and became aggressive towards them.

Smith went for a shower then returned downstairs holding a piece of paper with his mother’s bank PIN number on it. He started shouting and swearing again and the witness threatened to contact police.

It was heard Smith then left the house via an internal door leading to the garage. He then locked his parents in the house.

Smith’s father used a phone to try and calm him down. Eventually, Smith opened the door and snatched the phone from his father, attempting to remove the batteries from it.

Ms McLean told the court a short struggle then took place between Smith and his father. The pair returned to the house from the garage and his father tried to call the police.

At this point, it was heard Smith seized his father by the collar, twisting it and threatening to strike him. Smith began goading his father into assaulting him.

Smith’s father managed to break free and left the house via the front door, contacting the police on his mobile phone and the teen then fled the scene.

Police attended and saw that Smith’s parents were extremely distressed and frightened.

Later, at around 12.25am, police received a call to say that Smith had returned home. Officers attended and arrested him.

Defending, Peter Young said Smith still maintained some sort of relationship with his father and was aware that he was at risk of going to jail.

Mr Young said: “He is fully aware that the door is opening for him to end up in custody and that he is on the precipice.” Sentencing, Sheriff Simon Pender told Smith: “You are rapidly heading for a spell in prison if you do not mend your ways.

“I am going to give you a final chance with a direct alternative to a custodial sentence.” Smith was sentenced to a restriction of liberty order, banning him from leaving his home between 6pm and 6am for three months.