NEWARK, N.J. (AP) — Four men have been arrested on charges of murder, conspiracy and other counts in the carjacking death of a man shot in front of his wife outside an upscale mall in northern New Jersey last weekend, authorities said Saturday.

The suspects were identified as 29-year-old Hanif Thompson, of Irvington; 31-year-old Karif Ford, of Newark; 32-year-old Basim Henry, of Newark; and 33-year-old Kevin Roberts, of Newark.

4 Arrested For NJ Mall Carjacking Where Husband Was Executed in Front of His Wife

A police car drives in an empty parking garage at The Mall at Short Hills in Short Hills, N.J., Monday, Dec. 16, 2013, where a fatal carjacking took place Sunday. Authorities are searching for two suspects wanted in the deadly shooting of 30-year-old Hoboken resident Dustin Friedland who had just finished holiday shopping with his wife at the upscale mall in northern New Jersey. (AP Photo/Mel Evans)

They are accused in the Dec. 15 carjacking and killing of Dustin Friedland outside The Mall at Short Hills. The 30-year-old lawyer from Hoboken was shot in the head in the mall parking garage after being confronted by two carjackers, authorities said. The assailants drove off in his silver Range Rover, which was found the next morning in Newark, about 10 miles from Short Hills.

4 Arrested For NJ Mall Carjacking Where Husband Was Executed in Front of His Wife

The casket of Dustin Friedland is carried from the temple after a funeral service Wednesday, Dec. 18, 2013,in Lakewood, N.J. Friends and relatives gathered to mourn the 30-year-old lawyer who was shot to death by a carjackers outside a northern New Jersey mall last weekend. (AP Photo/The Asbury Park Press, Doug Hood)

The four face charges of murder, felony murder, carjacking, conspiracy, possession of a weapon and possession of a weapon for unlawful purpose. They were arrested between late Friday and early Saturday. Three of them were taken into custody in New Jersey, and Henry was arrested in Easton, Pa.

The suspects are being held on $2 million bail each but have not yet been formally arraigned. It wasn’t immediately clear if they had attorneys.

Acting Essex County Prosecutor Carolyn Murray attributes the swift arrest to “good old-fashioned police work” and leads from the public.

The carjacking occurred just as Friedland and his wife, Jamie Schare Friedland, were ending a shopping trip. Mourners at Friedland’s funeral on Wednesday said he had just opened the door of his SUV for his wife when he was shot.

Friedland had a law degree from Syracuse University and was project manager at his family’s heating and air conditioning and heating company.

More than $40,000 was offered for information leading to the arrest of the killers.