New York ( CNN ) -- Police issued an `` all clear '' after an electronic greeting card prompted employees at a commercial Israeli bank in New York to call emergency personnel , according to Paul Browne , a New York City Police Department spokesman . Authorities said they initially X-rayed the package and were concerned that it was `` a possible letter bomb , '' he said . The card contained interconnecting wires and batteries and drew a New York bomb squad to investigate . A law enforcement source told CNN that the letter was addressed to a bank employee . Multiple emergency vehicles and as many as 20 firefighters gathered around the building in Manhattan . Employees who left the building were not permitted re-enter it , according to CNN producer Kiran Khalid , but authorities did not evacuate the area . CNN 's Allan Chernoff and Jeanne Meserve contributed to this report .
Card containing wires and batteries drew a bomb squad to investigate . It was received at an Israeli bank in Manhattan . Multiple emergency vehicles and up to 20 firefighters had gathered at the building .