WASHINGTON, DC — Something incredibly gross apparently is happening in the U Street Corridor in D.C.: someone is smearing feces on the underside of the handles on Capital Bikeshare bikes.

Twitter user Martha Spieker posted photos of the handles on Sunday, noting that it happened in the area of 15th and W streets NW.

She said it has happened the last two Sundays, and Capital Bikeshare is dealing with it.