Caldwell's former team, the New England Patriots, expressed condolences after news of his death broke.

"We are deeply saddened to learn of the death of former Patriot Reche Caldwell," the organization

Caldwell's former team, the New England Patriots, expressed condolences after news of his death broke.

"We are deeply saddened to learn of the death of former Patriot Reche Caldwell," the organization tweeted. "Our thoughts and prayers are with his family and friends."

The Los Angeles Chargers did, as well.

"We are deeply saddened by the tragic loss of former Charger Reche Caldwell," the team wrote on Twitter. "Our thoughts and prayers go out to Reche's family, friends and teammates during this difficult time."

In addition, several athletes, including Tom Brady and Benjamin Watson, paid tribute on social media.

"Always kept us laughing and lighthearted," Watson wrote. "Always had the biggest smile. Always had the greatest stories. Sad to hear about the passing of my teammate Reche Caldwell. May the Lord comfort his family during this time."