BOSTON (CBS) — Some in the NFL community are weighing in on social media after news broke Wednesday morning that convicted murderer and ex-New England Patriots star Aaron Hernandez hanged himself in his prison cell.

Aaron Hernandez Suicide: What Happens Next

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Miami Dolphins center Mike Pouncey, a former teammate of Aaron Hernandez at the University of Florida, said on Instagram that it was “just a day ago” that the two talked.

Hernandez celebrates with his teammates Mike Pouncey and Tim Tebow after scoring a touchdown in the first quarter against the Cincinnati Bearcats during the Allstate Sugar Bowl at the Louisana Superdome on January 1, 2010. (Photo by Kevin C. Cox/Getty Images)

Pouncey reportedly testified before a grand jury in Hernandez’s first murder case.

“Today my heart hurts as I got the worse news I could have imagined,” Pouncey said.

Here’s what other NFL players, past and present, are saying:

Brian Murphy, Hernandez’s former agent, tweeted there was “absolutely no chance” that his one-time client killed himself.

Some tweets from other players seemed to indicate they were also questioning the circumstances of Hernandez’s death.

The New England Patriots have said they don’t expect to issue a statement on Hernandez’s death on Wednesday.