A California chicken farm that was shut down because of a cockroach infestation Wednesday says it's "voluntarily and temporarily" suspending operations a day after calling employees back to work.

Foster Farms said Sunday it was closing the plant in Livingston for several days so it could properly implement new food safety measures.

Work had resumed Saturday after Foster Farms announced that it met the demands of the U.S. Department of Agriculture by performing a thorough cleanup and treatment of the plant.

The plant closed Jan. 8 when inspectors found cockroaches on five separate occasions in various parts of the plant over four months.