YUBA CITY (CBS13) — A Yuba City business’ Black Lives Matter signs have been vandalized for the second time in a week.

Police were already investigating the first incident at Porky’s Barbecue as a possible hate crime.

READ MORE: Homicide Investigation Underway After Man Found Shot Dead In His Carmichael Home On July 4

The owners started displaying BLM signs during the George Floyd movement. But, on Wednesday, the owners found that someone had covered the signs with blue paint. A “thin blue line” flag was also stapled to their building.

“When they start painting the windows, the next thing to do is to firebomb it,” Samuel Thompson said.

READ MORE: Electra Fire: Firefighters Gain Significant Containment, Some Amador County Evacuation Warnings Downgraded

RELATED: Black-Owned Business’ Black Lives Matter Signs Vandalized Using ‘Thin Blue Line’ Symbols

Just a day after cleaning up the vandalism, however, the owners discovered that their windows had again been covered in paint.

MORE NEWS: Jays Edge A's 2-1 To Snap 5-Game Skid

Yuba City police have said they are increasing patrols in the area and will be looking at surveillance cameras to try and identify any possible suspects.