The FBI Tuesday morning raided a mansion in Beverly Hills in connection with an investigation into former Congressman Eric Swalwell, sources told The Times.

Swalwell, a Democrat from Dublin, dropped out of the California governor's race and resigned from Congress in April after allegations that he sexually assaulted a former staffer and acted inappropriately with other young women, which he denied at the time. Before he dropped out of the race, polls indicated that Swalwell was among the front-runners.

On Tuesday, FBI agents were in Beverly Hills executing a search warrant on North Roxbury Drive in connection with the probe.

"We are executing a search warrant. Court documents are sealed. No arrests are planned," said FBI spokesperson Lourdes Arocho.

In August, agents seized his electronic devices and raided Swalwell's Washington home over the weekend, even briefly holding the former lawmaker at San Fra...