Suffolk police could not immediately say Wednesday whether the victims were targeted because they are Hispanic.
The three robberies took place between April 27 and Tuesday, police said. In the first robbery, which took place at 2:30 a.m., a man was assaulted and robbed of his cellphone and hat by three men, one armed with a gun, police said. But police said the next night, three men who were in a gray car robbed a man of cash as he walked along Grove Avenue in East Patchogue at about 3 a.m.
The third robbery took place late Tuesday night on Bailey Avenue in East Patchogue.
In that robbery, police said three men assaulted the victim, then robbed him of cash, a cellphone and a backpack. The suspects fled in a dark-colored car.
Police said two other robberies under investigation also involved Hispanic victims, but appear not to be connected.
On Nov. 8, 2008, Ecuadorean immigrant Marcelo Lucero, 37, died after he was attacked in Patchogue by seven young men who had set out to look for Latino immigrants to attack. They were prosecuted and are serving prison sentences.
Police ask anyone with information to call Crime Stoppers at 800-220-TIPS. All calls will remain confidential and callers are eligible for a cash reward of up to $5,000 for information leading to an arrest, police said.