Palmerston North police have arrested and charged a 21-year-old and a 19-year-old man who fled in the stolen vehicle, this morning.
Central District Command Centre senior sergeant Matt Prendergast said the gang members were observed driving on Maxwells Line, Roslyn, last night just before midnight.
"A Police Dog Unit indicated for the vehicle to stop, and the offenders attempted to ram the vehicle," he said.
"The two occupants of the offending vehicle then began to throw metallic car parts out of the vehicle at police following them."
He said spikes were deployed on Tremaine Avenue however the vehicle continued to drive onto the hospital grounds.
"The vehicle finally came to a stop and one occupant ran from the vehicle and was located in the hospital car park, while the other occupant was located shortly after," Prendergast said.
He said a sawn-off shot gun, ammunition and cannabis were found in the vehicle.
The 21-year-old driver has been charged with failing to stop for police, driving in a dangerous manner and driving while on a suspended licence.
The 19-year-old passenger faces assault, possession of an offensive weapon, unlawful possession of ammunition charges, among others.
"This was a very dynamic and dangerous event but through the professionalism of the Police staff involved successfully bought this situation to a safe conclusion for the public, police staff and the offenders," Prendergast said.
The duo will appear before the Palmerston North District Court today.