LOS ANGELES (AP) — What may have been the largest single piece of graffiti in the United States is getting wiped out in Los Angeles.
A contractor for the U.S. Army Corps of Engineers on Thursday began painting over the gigantic letters "MTA" on the concrete bank of the Los Angeles River.
Corps spokeswoman Jennie Ayala says the letters are 57 feet (17 meters) high and about 500 yards (meters) long.
The removal is part of an $837,000 project to erase graffiti from 100 miles (160 kilometers) of the flood control channel.
"MTA" stands for "Metro Transit Assassins." Authorities contend the letters were painted on the riverbank by up to 40 taggers.
Sgt. Maj. Jeffrey Koontz says 14 people were arrested earlier this year. He says they could be ordered to pay millions in restitution if they're convicted.