City workers in Los Angeles on Tuesday took down large white block letters spelling out "TRUMP" along the 405 Freeway.

The city acted quickly after the Hollywood sign style letters, put up by an unknown party, were first reported by drivers in the northbound lanes of the Sepulveda Pass at 6:41 a.m. Tuesday, according to local Los Angeles news station KTLA.

The traditionally liberal city promptly removed the sign, citing it as a traffic hazard as passing cars were slowing to snap photos. They also cited fire concerns since the sign was erected in a dry, bush-heavy area and they said that it needed to be removed because it was positioned on private property, KTLA reported. It’s unclear who owns the land in question.

The letters appeared to be about 10-feet-tall and were clearly visible from aerial shots shared on Twitter. They reportedly have been flattened, but not entirely removed, according to the Los Angeles Times.