Kwamie Lassiter, Chargers
Kwamie Lassiter of the San Diego Chargers during the Chargers 20-7 loss to the Chicago Bears at Solder Field on Nov. 2, 2003: Photo credit: Todd Rosenberg/Icon SMI

Kwamie Lassiter, a former San Diego Chargers safety who spent most of his career with the Arizona Cardinals, died Sunday in Phoenix. He was 49.

The Cardinals did not release the cause of death but Arizona Sports 98.7 FM said Lassiter died from a heart attack while working out.

“We were all devastated to learn of Kwamie’s passing today and our hearts go out to all of his family and friends,” Cardinals president Michael Bidwill said in a statement. “Kwamie came to the Cardinals as an undrafted rookie free agent. He not only became a key contributor to our team for eight seasons but continued to make an impact on this community after his playing days ended. He will be missed greatly.”

Lassiter’s NFL career highlights include the eight interceptions in 1998, the last four against the Chargers, to help the Cardinals reach their playoffs since moving to Arizona. He was named an alternate to the Pro Bowl after the recorded nine interceptions in 2001.

Lassiter was picked up as a free agent by the Chargers in 2003 after spending eight seasons with the Cardinals. After playing 10 games as a Charger, he ended his career in 2004 with the St. Louis Rams.

After retiring, Lassiter remained active with the Cardinals and started the Kwamie Lassiter Foundation to raise awareness for challenges children face growing up.

He is survived by his children, including Kwamie II, Eric, Kwinton, Kwincy, Darius, KaVon, Devon and Darian.