BROOKLYN - The FBI is offering a large reward for information leading to the arrest of a man with ties to Brooklyn. 

Ralik Hansen is wanted for allegedly robbing a Cartier jewelry store in Manhattan in broad daylight. Authorities say he and four other men smashed jewelry cases and took 16 watches valued at more than $700,000. 

According to investigators, Hansen is part of a violent interstate robbery crew from Brooklyn, and is known to hang out around the borough. The 28-year-old, who also goes by the name "Rah," is believed to be connected to at least two other robberies in New Jersey and Virginia. 

Hansen was last seen with a shaved head, and has scars on his left wrist and elbow. Cops warn that he is considered to be armed and extremely dangerous. 

Police say two Brooklyn men have already been arrested in connection with the Cartier heist. 

Anyone with information should call the FBI at 212-384-1000. You can remain anonymous.