Cops are searching for four suspects in connection with at least three robberies on the Lower East Side this week. This past Wednesday at about 11:45 p.m., investigators say they attacked a 29-year old man near Cherry and Rutgers streets. The victim was punched in the face and a bracelet and $40 were stolen. Then on Thursday, at around midnight, they approached a man and a woman in East River Park. One of the suspects brandished a gun and stole the woman’s purse. Several minutes later, also in East River Park, the suspects swiped a watch from an 18-year old man. The surveillance image you see above is from a security camera at a McDonald’s restaurant. Police say the suspects used a credit card from the female victim. There are two men and two women in the crew; witnesses have said they’re in their late teens or early 20’s. If you know anything about these crimes, call Crimestoppers at (800) 577-TIPS.