The San Francisco 49ers began their search for a new defensive coordinator Thursday by interviewing Robert Saleh for a second stint at the job and Detroit Lions assistant Deshea Townsend. The Niners fired Nick Sorensen earlier this week after just one season in the role and are seeking their fourth defensive coordinator in the past four seasons.

The 49ers announced on Thursday they have completed an interview with Detroit Lions passing game coordinator/defensive backs coach Deshea Townsend for their vacant defensive coordinator spot. Townsend interviewed virtually for the opening.

Deshea Townsend oversaw a Detroit Lions secondary that finished 30th in NFL in pass defense this season but tied for the fifth-most interceptions.