Three people at Brooklyn Supreme Court were sickened Monday when they came into contact with a suspicious white powder, authorities said.

A woman called cops at around 11:39 a.m. and told them she was an assistant to a judge on the eighth floor of the Kings County Supreme Courthouse at 360 Adams St., officials said.

The worker said she had opened a suspicious package that had a sweet smell coming from it, authorities said. Inside was an unidentified powder, they said.

Two other people also came into contact with the substance, and all three people began to feel sick soon after, according to officials.

The building was not evacuated, and the package was contained to a room on the eighth floor, officials said.

The three people who felt ill were evaluated by EMS at the scene, authorities said.

The substance is being tested, officials said, and the investigation into the incident is continuing.