An MBTA passenger is facing disorderly conduct charges after police say he dropped a chocolate milk container under a bus in Brigham Circle — forcing its evacuation and prompting an investigation for a suspicious package.

Officials didn’t release the man’s name but said he will also face a charge of interfering with public transportation and is set for arraignment this afternoon.

T spokesman Joe Pesaturo said the Route 66 driver told investigators the passenger exited about 9:30 a.m. and dropped the item under the bus. Pesaturo did not say why the item was considered suspicious.

The male passenger was taken into custody at the scene, Pesaturo said.

The scene was clear as of 10:40 a.m., Pesaturo said.