DALLAS -- The Dallas County district attorney's office received paperwork Friday recommending that three charges of failure to stop and render aid be added to the manslaughter charges Dallas Cowboys defensive back Dwayne Goodrich faces in a Jan. 14 hit-and-run accident.

Failure to stop and render aid is a felony punishable by up to five years in prison. Manslaughter is a second-degree felony punishable by two to 20 years in prison.

Dallas County District Attorney Bill Hill said a grand jury could begin hearing evidence in the case next month. No other charges are pending, he said.

''We're going to stick with these charges right now,'' Hill said.

Police said the accident happened just after 2 a.m., when Goodrich -- on his way home from a topless nightclub -- drove his BMW at speeds believed to be in excess of 100 mph -- between a concrete barrier and a burning car involved in an earlier highway accident.

A passenger in the burning car was trying to free the driver when Demont Matthews, 23, and Joseph Wood, 21, pulled to the side of the road and ran up to help.

The BMW ran into all three rescuers, killing Matthews and Wood. The third man had a broken leg.

Goodrich is free on $50,000 bond for the two manslaughter charges.

Reed Prospere, Goodrich's attorney, said he and his client were aware the additional charges would be filed.

''This is not a surprise, a shock or something that wasn't talked about at the time he surrendered,'' Prospere said in the online edition Friday of The Dallas Morning News. ''It was just a function of them getting the paperwork down there'' to the district attorney.''

Prospere said Goodrich would turn himself in and post a new bond as soon as the warrants were posted and all the paperwork prepared.

''I anticipate we'll turn ourselves in Monday or Tuesday,'' Prospere said.