Suffolk County Police display images taken from the security camera at the Haven Pharmacy during a news conference in Yaphank, N.Y., Monday, June 20, 2011. (Seth Wenig/AP)

The Medford drugstore’s pharmacist, 45-year-old Raymond Ferguson, was killed along with his assistant, Jennifer Mejia, whose funeral is slated for Wednesday, the day she planned to attend her Bellport High School prom. Two customers were also killed, 71-year-old Bryon Sheffield and Jamie Taccetta, 33.

Now, Suffolk County policemen — who have called the crime “one of the most heinous, brutal crimes we have ever encountered” — are releasing surveillance camera images from the massacre in the hopes that someone will recognize the shooter, the Long Island Press reports.

“This … was definitely the worst crime caught on our cameras,” George Brociner, a manager at CCTV Services, who caught the crime on tape, said. The companies cameras have captured countless shootings, robberies, muggings and vandalism over the years.

New York City boasts that is has over 10,000 surveillance cameras, some 3,000 of which are operated by the Police Department. The numbers of cameras in use skyrocketed after 9/11, and police say they have both prevented crimes and helped catch criminals after the fact.

Read a full report by the New York Civil Liberties Union on video camera surveillance in New York here.