Fall River, Mass. (AP) -  A cousin of former New England Patriots tight end Aaron Hernandez pleaded not guilty Monday to an accessory charge in the killing of Hernandez's friend.

Tanya Singleton was held without bail after entering her plea to a charge of conspiracy to commit accessory after the fact. Prosecutors say that in the days after the June killing of Hernandez's friend, Odin Lloyd, she helped one of Hernandez's associates flee to Florida.

Hernandez has pleaded not guilty to first-degree murder and weapons charges in Lloyd's shooting death. Ernest Wallace, the friend who fled to Florida, is also charged as an accessory after the fact in Lloyd's death.

Singleton, 37, was already being held on a contempt charge. She was indicted on that charge after allegedly refusing to testify before the grand jury hearing evidence in Hernandez's case.

Her lawyer, E. Peter Parker, would not comment outside court.

Singleton smiled several times during her brief arraignment but did not address the court other than to say, "not guilty."

In court last week, a prosecutor alleged that Singleton drove Wallace to Georgia, and when her car broke down there, she bought him a bus ticket to Florida.

Singleton agreed to be held without bail on both charges but has the right to ask for a bail hearing at a later date. She is due back in court Oct. 24 for a pretrial conference on both charges.

Lloyd was found shot to death June 17 in an industrial part in North Attleborough, Mass., near Hernandez's home. Lloyd, 27, a semi-professional football player from Boston, was dating the sister of Hernandez's girlfriend.

Prosecutors said Wallace and Carlos Ortiz were with Hernandez and Lloyd on the night Lloyd was killed. Both are charged with accessory to murder after the fact. Wallace has pleaded not guilty; Ortiz's lawyer has said his client will do the same.