Residents in San Jose's Willow Glen neighborhood are up in arms after discovering large sections of grass vandalized at several front lawns.
On Ardis Drive, seven lawns with patterns burned in were all damaged Sunday night.
"We've never seen anything like this," resident Andy Goldberg said.
Neighbors have checked home surveillance video but have not found any leads.
Residents on Thursday said they have yet to file a police report, but are still trying to figure out what happened.
At least one resident has filed a police report.