Delaware State Police are looking for four people who were allegedly involved in a road-rage shooting early Saturday that left a man in critical condition.

Investigators said the incident happened around 2:15 a.m., as a 20-year-old man was riding in a Toyota Camry being driven by a second 20-year-old man north on SR 1 about three miles south of the Biddles Toll Plaza in Middletown.

As the Toyota passed a dark-colored sedan carrying four men, the occupants of both vehicles exchanged "physical gestures," police said.

After the sedan passed through the cash toll lanes, its driver allegedly pulled into the plaza's parking lot. Police said the Toyota followed close behind.

The 20-year-old passenger immediately got out of the Toyota and confronted the men in the parked sedan, striking and shattering the driver's side rear window, police said.

The four men then got out of the sedan and a physical fight ensued, according to officials. One of the men allegedly took out a handgun and fired at the 20-year-old, striking him in the upper body.

Police said the four suspects fled the parking lot and were last seen traveling north on US 13 toward the Saint Georges Bridge.

The Toyota fled the parking lot north on SR1 but stopped on the Roth Bridge, where emergency services were alerted due to the victim's "deteriorating condition," according to investigators.

The 20-year-old was rushed to a local hospital, where he was admitted in critical condition. Police said the Toyota's driver was not injured.

Delaware State Police detectives are still conducting interviews, collecting evidence and reviewing surveillance video to uncover more information about the incident.

Anyone with information about the crime is asked to contact the Major Crimes Unit at Troop 2 at 302-365-8426, or to submit a tip by dialing Delaware Crime Stoppers at 1-800-TIP-3333 or by texting CRIMES (274637) using the keyword "DSP."

Contact Alex Wigglesworth at 215-854-2305 or Follow @phila_lex on Twitter.
Contact the Breaking News Desk at 215-854-2443; Follow @phillynews on Twitter.