The Secret Service is reportedly investigating after a vehicle in President Trump's motorcade was hit by an object in south Florida, where the president is spending his weekend.

A US Secret Service spokesperson told members of the President's press pool that they are investigating an incident: “The Secret Service can confirm that an object appears to have been thrown at the motorcade this afternoon. We are investigating at this time and don’t have anything further.”

According to ABC News, law enforcement said the object was a rock. It didn't hit the presidential limo, but another vehicle in the motorcade.

NEW: Secret Service investigating after vehicle in Pres. Trump’s motorcade in Florida was struck by an apparently thrown object (1/2) — ABC News (@ABC) February 17, 2017

More: The presidential limo was not hit by the object, apparently a rock, senior law enforcement official tells @ABC News. (2/2) — ABC News (@ABC) February 17, 2017

President Trump is in Florida visiting his Palm Beach resort Mar-a-Lago for a third straight weekend; last weekend he was joined by Japanese Prime Minister Shinzo Abe.

Trump is expected to appear at a rally in Melbourne, Fla., on Saturday.