Someone sent a letter containing a mystery substance to a Union Square doctor’s office, causing a secretary there to suffer a burning sensation on her hand, cops said.
Firefighters briefly cordoned off a section of Mount Sinai Beth Israel/Phillips Ambulatory Care Center at 10 Union Square East as medical crews evaluated three people on Friday afternoon, the FDNY said.
The secretary was treated with Benadryl and released. The substance, described as a dried-up liquid, is being tested.
Mount Sinai Hospital on Madison Avenue in Midtown had its own scare Thursday, when a white powder was found inside a mailbox outside the transplant unit — hours after comedian Joan Rivers was hospitalized there after she briefly stopped breathing.
Cops don’t believe there’s any connection to Rivers.