"Cleveland Browns wide receiver Donte Stallworth tested positive for marijuana use after the car he was driving struck and killed a pedestrian, law enforcement sources have told the Miami Herald.

Stallworth, 28, is serving a 30-day jail sentence as part of his penalty after pleading guilty to DUI manslaughter on June 16. He was driving his Bentley when it struck and killed Mario Reyes, 59, on March 14 in Miami.

Prosecutors said Stallworth's blood alcohol level of .126 was well above the legal limit when he was tested after the accident. The Herald reported Wednesday that, according to the unidentified sources, the test results also showed traces of marijuana. The results have not yet been released.

"Evidence leaked or released over the coming days and weeks will reflect exculpatory statements and acts by Donte', the presence of marijuana in his blood, and it will highlight the critical issue of causation," read part of a statement released by Stallworth attorney David Cornwell of the sports law firm DNK Cornwell.

"Miami law enforcement personnel, the prosecution, the defense, and the court were fully aware of all of the evidence when the plea agreement was reached. We will continue to address these matters candidly and privately with the NFL."

NFL Commissioner Roger Goodell placed Stallworth on indefinite suspension from the league on June 18. Stallworth, a seven-year veteran, caught just 17 passes in 11 games during an injury-plagued 2008 season, his first with the Browns after signing with them as a free agent."