The mayor of San Marino, a small, wealthy community in Los Angeles county where the median income is near $140k per year, was caught on camera tossing dog excrement on his neighbor’s lawn, local news sources report.

Home surveillance video shows Mayor Dennis Kneier tossing a bag, later found to be dog excrement, on Philip Lao’s lawn as he walks by. The mayor claims that he picked the bag up and put it on Lao’s property in order to replace it there. He also criticized Lao’s “No Dog Poop” sign, according to the local NBC News affiliate.

However, Lao says that the mayor may have been retaliating for his opposition to a dog park proposal.

Update: The San Marino city council is nonpartisan, though a “Mr. Dennis Kneier” from San Marino appears to have donated to Republican Fred Thompson’s presidential campaign in 2007.