A man who police said was involved in the smash-and-grab robbery at a New Canaan jewelry store a year ago committed suicide Halloween night, police said last week.

Ralik Hansen, 28, shot himself in Brooklyn, N.Y., on Oct. 31 after a FedEx delivery person knocked on his front door and he "erroneously thought it was the police coming to get him," according to a Nov. 13 news release. Police said it is not clear whose home that was.

Hansen, whose aliases included Ralik Taylor, Rahlik, Rah and Ratchet, was wanted on federal charges by the FBI and was considered armed and dangerous. He faced a federal indictment in April, but remained at large until his death.

Police said Hansen and two other suspects assisted the four men directly involved in the Nov. 6, 2013, robbery at Henry C. Reid & Son Jewelers, 72 Elm St.

Ryan Campbell, 36, of New Jersey, is in federal custody on other charges. Courtney Hardin, 25, of Brooklyn, is a fugitive and considered armed and dangerous, police said. The man, also known as Mozie, is "being hunted down and will be brought to justice soon," Police Chief Leon Krolikowski said in the release.

The three men's specific roles in the local crime were not detailed, although Krolikowski said they were likely involved in planning the robbery. Hardin is also sought in connection with the heist of $700,000 worth of watches from the Cartier store in Manhattan.

In March, police said four suspects were indicted and arrested on multiple charges, including robbery charges for their involvement in the New Canaan store robbery. Roberto Grant, 33; Ronald McIntyre, 36; Sean Robinson, 42, and Allen Williams, 35, are in federal custody and awaiting trial, according to police.

The crime in New Canaan took place at around 4 p.m. Nov. 6 last year when those four males attempted to enter the jewelry store, but were stopped when an employee locked the front door, according to police. One of the suspects shattered a front display window with a tool resembling a sledge hammer, reached in through the broken glass and took three Rolex watches with an approximate value of $55,000, police said.

The five suspects fled on foot behind a row of businesses, where it is believed they drove off in a Chevrolet Malibu with tinted windows and New York plates. Blood and skin tissue evidence was recovered at the scene, police said.

According to a release from the U.S. Attorney's Office, the five men were part of a multistate robbery crew that "used violence, including firearms, to steal more than $1 million in luxury watches."

Krolikowski credited the "hard work and dedication" of several law-enforcement agencies that worked together to find the suspects.

"I knew from the beginning it was going to be a complex investigation," he said. "It kind of unraveled a multi-state crew of gang members that committed these crimes. It was pretty interesting."

noliveira@bcnnew.com, 203-330-6582, @olivnelson