Lions sign ASU alum Tyrell Johnson

DETROIT ( - The Lions had a number of breakdowns in their secondary Sunday that resulted in six passing plays of 20-plus yards and four plays of 40-plus yards in a 35-33 loss to the Colts.

The Lions made a move Tuesday to try and help bolster that area of their defense by signing veteran free agent safety Tyrell Johnson, who was a second-round pick of the Vikings in 2008.

Johnson played in 49 games in four seasons with the Vikings and made 27 starts over that span. He has 123 career tackles with 10 passes defended and two interceptions.

He signed with the Dolphins as a free agent this offseason but was cut before the season began. The Lions worked him out earlier this season but did not sign him at the time.

The team released veteran safety Erik Coleman to make room for Johnson on the 53-man roster. Coleman played the last two seasons with the Lions and started seven games this year with 45 tackles.