Published: Jun 19, 2012 5:18 PM EDT
Updated: Jun 20, 2012 6:31 AM EDT

DALLAS (AP) - Prosecutors in Texas have dropped a charge of aggravated assault with a deadly weapon against Tampa Bay Buccaneers cornerback Aqib Talib.

The decision, detailed in a court filing Monday, was made a week before the 26-year-old Talib was due to be tried for allegedly firing a gun at his sister's boyfriend. The alleged incident occurred during a March 2011 domestic dispute in Garland, a Dallas suburb.

One of Talib's attorneys, Frank Perez, said he believes "credibility issues" with the boyfriend caused prosecutors to dismiss the charge.

Talib's attorneys had filed a motion seeking case files pertaining to the boyfriend, who, according to the filing, is facing a child sex assault charge.

Talib has been a starter for the Bucs since being drafted out of Kansas in 2008.