Men sporting shaved heads and robes who impersonate Buddhist monks and aggressively panhandle for donations are once again proliferating in New York City and countries around the world, the authorities said.

Reports of the fake monks spiked two years ago, then waned. But now they are back in force from Times Square to the High Line, the public park built on an old elevated rail line on Manhattan’s West Side.

The panhandling is not limited to New York City, however. Reports of the men have surfaced in San Francisco, Australia, Canada, Hong Kong, India and Nepal, officials said.

Their tactics follow a familiar script: Hold out a beaded bracelet or gold-colored medallion featuring a Buddhist saying to a passer-by, get the person to take it, then ask for a donation. Those who offer too little money or nothing at all have the items snatched back and risk being shouted at, The Associated Press reported.