Northern Territory Police are calling for information after two suspicious hit and runs this morning.

Around 6am, police received a report that a small silver hatchback had struck a motorcyclist on McMinn Street, Darwin City, before fleeing the scene.

The 30-year-old male rider suffered serious grazing to his leg and was conveyed to Royal Darwin Hospital for treatment.

A short time later, police received report that a small silver hatchback had struck another rider on Iliffe Street, Woolner.

In this instance, the occupants of the vehicle allegedly attempted to rob the fallen rider before being confronted and fleeing the scene.

The 43-year-old male rider suffered minor grazing and was also conveyed to Royal Darwin Hospital.

Police deployed to the area but the vehicle is yet to be located.

Detectives from Serious Crime are currently investigating and police believe the hit and runs were intentional.

Police urge anyone who witnessed the incidents, or who has dash cam or CCTV footage, to contact police and quote reference number P24293700.

Anonymous reports can also be made through Crime Stoppers on 1800 333 000 or via https://crimestoppersnt.com.au/.