A woman who delivers food for a Chinese restaurant was killed and a male coworker was injured during a robbery in Waterbury on Tuesday night and police have arrested a four teens, who police suspect placed the order themselves with the intention of committing the robbery.

Police responded to the report of a robbery at 70 Linden St. just before 9:30 p.m. and found two victims -- a male and a female -- who were delivering food for Golden Wok in the area for a local Chinese restaurant, according to police.

Four people attacked and robbed the victims, according to police.

They assaulted the male delivery driver and shot the female victim, 59-year-old Helena Vargas, of Waterbury, in the neck, police said.

She was transported to St. Mary’s Hospital, where she was pronounced dead just after 10 p.m., police said.

Waterbury Police worked throughout the night and morning hours and have arrested four people.

Anthony Wright, 20, a 16-year-old girl, a 17-year-old girl and a 16-year-old boy have been arrested. All four were charged with felony murder, first-degree robbery and first-degree conspiracy to commit robbery.

"We believe it's an isolated incident. We believe that these four individuals conspired to commit the robbery and we believe they intentionally ordered the food and called these people to that address in an effort to commit the robbery." Deputy Police Chief Fred Spagnolo said.

Wright and the 16-year-old boy have also been charged with second-degree larceny, conspiracy at larceny in the second degree, carrying a pistol without a permit and criminal use of a firearm.

After a court appearance, Wright is being held on $2.5 million bond. Prosecutors said Wright is a known gang member and were pushing for $5 million bond, but the judge set it at $2.5 million.