Disgraced NFL star O.J. Simpson pleaded not guilty to the twelve felony charges in connection with an armed robbery in Las Vegas earlier in September.

The 60-year-old former football player, who was famously acquitted of murdering his wife and her friend in 1994, returned to court on Wednesday to enter his plea in front of Clark County District Court Judge Jackie Glass, who is also set to preside over the upcoming trial scheduled for April 7, 2008.

During Wednesday’s brief court appearance, codefendants Clarence (C.J.) Stewart and Charles (Charlie) Ehrlich also entered not guilty pleas to charges including kidnapping and armed robbery. The kidnapping count is the most serious charge and carries a maximum life-in-prison penalty.

The three men will be tried on 12 counts overall, after they reportedly stole items from two sports memorabilia dealers in a confrontation at the Palace Station Casino on September 13.

The "Naked Gun" star is accused of leading a group of five men, who reportedly stormed into collector Alfred Beardsley's hotel room in Las Vegas, and removed an estimated $80,000 worth of memorabilia items, including signed footballs, baseballs, awards, photographs and the suit he wore at his 1995 acquittal, which Simpson maintains were stolen from a storage facility. Two of the men reportedly carried guns.

Three of the men involved in the alleged robbery, whom Simpson called "his golfing buddies," have agreed to testify for the prosecution, tightening the case being built against the former sports icon.

Since his arrest in September, Simpson has maintained his innocence, claiming he only retrieved what was once stolen from him, and also insisted that there were no guns involved.

During the preliminary hearing, Simpson’s lawyers failed to get any of the charges dropped, despite vehemently trying to discredit the witnesses and their motives, while insisting the items belonged to Simpson.