A Pennsylvania man has been arrested and is accused of running into his brother with his car in the parking lot of a hotel in Hauppauge.
According to police, the incident happened at the Hyatt Regency Hotel just after 9 p.m. Sunday.
News 12 has been told Thomas Delaney and Michael Dubhlaine were arguing before the incident.
Police say Delaney then got into his pick-up and ran over Dubhlaine.
The Port Jefferson man was airlifted to Stony Brook University Hospital with serious injuries.
Delaney is charged with assault and driving while ability impaired.