California Highway Patrol officers called to a stretch of freeway in SF on reports of an erratic driver made a damp discovery Sunday, when they found the car in question had plunged into the Bay, but the driver was nowhere to be found.

The Chron reports that CHP received calls regarding a "veering" driver on 101 near Candlestick Point at around 6 p.m. Sunday night. According to CBS 5, witnesses saw the vehicle go over an embankment on northbound 101, where it then "plunged into the water about a quarter mile south of Candlestick Point."

Who made the plunge, however, is still unknown. CHP spokesperson Officer Damian Cistaro, who spoke with the Chron, says “Officers arrived, and they discovered this vehicle in the water about 20 yards from the roadway."

“Nobody was inside the vehicle," Cistaro says.

The CHP says that a tow truck was all that was necessary to pull the vehicle back to land, suggesting that the waters were shallow enough for a driver to safely escape. According to Cistaro, the investigation into the incident is ongoing.