REDONDO BEACH (CBSLA.com) — Hillary Clinton’s brother-in-law has been arrested on suspicion of driving under the influence of alcohol in the South Bay area, police said Monday.

Just before 8:00 p.m. Sunday, a concerned citizen notified of authorities about a motorist driving erratically on the Pacific Coast Highway, according to the Redondo Beach Police Department.

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Officers located the vehicle near the intersection of Torrance Boulevard and South Prospect Avenue and subsequently arrested Roger Cassidy Clinton, 59, on suspicion of DUI.

According to police, Clinton refused all chemical testing following his arrest.

He posted $15,000 bail at the Redondo Beach Jail and is scheduled to appear in court in Torrance on Sept. 2.

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Clinton’s arrest occurred two days ahead of the California primary election.

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His half-brother, Bill, visited the Southland over the weekend to campaign on behalf of his wife, Hillary.