A teenage boy had to be taken to hospital after being bitten by a police dog as he was arrested over a fire.

He was one of two 17-year olds charged after a fire at a shop in Melbourne’s west.

Emergency services were called to reports of a fire the empty shop on Wool Street at Tarneit about 2.30am.

Teenager arrested over fire bitten by police dog in MelbourneEmergency services were called to reports of a fire the empty shop on Wool Street at Tarneit about 2.30am. (Nine)

Investigators were told multiple offenders fled in a Toyota Landcruiser, which was later found dumped at the intersection of Dohertys and Mount Cottrell roads in Mount Cottrell.

After a search which involved the Dog Squad and Air Wing, two 17-year-old boys from Greater Dandenong were arrested about 5am.

One of the boys was taken to hospital after being bitten by a police dog.

Ambulance Victoria said he was treated for injuries and taken to Sunshine Hospital in a stable condition.

They have been charged with aggravated burglary, criminal damage by fire, conduct endangering life/serious injury, theft of motor vehicle and possess articles to destroy.

One teen will be directly presented to a children’s court and the other will have a bedside remand hearing.

The investigation is ongoing.