Stallworth was questioned by Police the morning of March 14 after the seven-year NFL veteran struck and killed 59-year-old Mario Reyes while driving near the end of the MacArthur Causeway in Miami Beach. Later reports indicated that Stallworth's blood alcohol level was above the legal limit (.12 according to a Miami Herald source).
A March 24 report stated that Stallworth told police he flashed his headlights to warn Reyes -- who was struck as he was rushing across the street to catch a bus.
The charge carries a possible 15-year prison sentence.
A few days after the incident, Stallworth issued an apology.
A video obtained by the Miami Herald shows police administering a field sobriety test on Stallworth as paramedics work to save Reyes.
''My family and I are grief stricken over the tragic accident which occurred Saturday on Miami Beach where Mario Reyes sadly lost his life,'' Stallworth said in a prepared statement. ``My thoughts and prayers are with the Reyes family during this incredibly difficult time. Unfortunately, since this accident is still under police investigation, I cannot comment further on the matter at this time."
Donte Stallworth expected to be charged with DUI manslaughter [Miami Herald w/video]