Ford Motor Co. cancels production at its Wayne, MI, assembly plant until further notice due to a parts issue, a spokeswoman says.

Workers at the plant, which assembles the Ford Focus small car, were told not to report for the afternoon shift Oct. 31. The morning shift today also was called off.

Exactly when production will resume is unclear, as Ford is taking a “shift-by-shift” approach to the situation, she says.

“It could kick back in by this afternoon, but we don’t have any additional information.”

Ford declines to reveal the source of the parts issue, but various media reports indicate it is due to a shortage.

The spokeswoman says Ford’s top priority is to “make sure every vehicle in a customer’s driveway is of the highest quality.”

The Wayne plant employs 2,704 hourly workers and was operating at full capacity prior to the stoppage, she says.