EL CAJON (CNS) - An El Cajon city councilwoman whose home and former office were searched by FBI agents last week resigned Wednesday, saying recent events threatened to take away the time she needed to serve the city and her constituents.

Jillian Hanson-Cox resigned in a letter to Mayor Mark Lewis and her council colleagues. Her resignation will take effect immediately.

"Recent events have given rise to a burden and demands on my time that would possibly detract from the time necessary to continue my commitment to the city and my constituents," the two-term councilwoman wrote. She would have faced a re-election race in November.

FBI searched her home and former office at Century Design Inc., a Kearny Mesa maker of machinery for processing composite materials, where she was the controller. Company officials said Hanson-Cox no longer works there, and that the company was not the target of the FBI investigation.

The FBI declined to comment on the investigation involving Hanson-Cox.

The mayor said Hanson-Cox's energy, fresh ideas and commitment would be missed.

"She has worked tirelessly for the city and our residents, spending her own time to meet with businesses that might relocate in the city, meeting with residents and local business owners to address issues in their neighborhoods, giving special attention to the needs of our senior residents, and by giving her time to serve on volunteer boards for those special events that make our city wonderful," Lewis said.

City Attorney Morgan Foley is expected to advise the City Council about its options for replacing Hanson-Cox on Tuesday. The council could appoint someone to serve out the remainder her term or leave the seat vacant until the general election, Foley said.