WASHINGTON (WUSA9) - A D.C. Police harbor boat responding to an emergency call crashed into two vessels.

One of the small boats sunk. Efforts to save it failed.

"We first saw a police boat that took off really fast, like it was taking a call," a witness said. "Then, we saw the second one that backed out and instead of going around the way the way the other one had, he came toward the boats and he gunned it and he hit both boats."

The U.S. Coast Guard and MPD responded to start an investigation.

It's unclear why the driver lost control.

Read or Share this story: http://on.wusa9.com/1lzE1dU