Police are investigating following a shooting and ramming in Sunbury this morning.

Police were patrolling in Horne Street when shots were fired at their vehicle.

The police drove to a nearby McDonalds where they sought shelter inside.

While the officers were in the restaurant the shooter returned and fired further shots at the police car.

The police vehicle was then rammed by a silver sedan, which sped from the scene.

Several police units attended the area to search for the vehicle, and safely escorted employees and police from the McDonalds.

Police have arrested a 33-year-old man of no fixed address, and two Sunbury men, aged 26 and 18, at an address in Phillip Drive, Sunbury.

Authorities are not looking for anyone else in relation to the shooting.

The firearm used in the incident is still outstanding.

An investigation into the shooting is ongoing.

Anyone who witnessed the incident or anyone with further information is urged to contact Crime Stoppers on 1800 333 or submit a confidential crime report at www.crimestoppers.com.au.

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Three men arrested after police car shot at in Sunbury this morning .. McDonalds here closed where officers hid inside @3AW693 pic.twitter.com/ECf7fc7Ruo

— Kiara Parker (@Kiara_Parker_) August 12, 2019