Embattled former American football star Darren Sharper surrendered to police in Los Angeles on Thursday (27Feb14) after an arrest warrant was issued by authorities in New Orleans, Louisiana in connection with two additional charges of rape.

The retired sportsman turned himself in to cops hours after representatives at the Orleans Parish district attorney's office announced that the 38 year old and his associate Erik Nunez had each been hit with two counts of aggravated rape.

The charges relate to an incident which allegedly took place with two women in a New Orleans apartment on 23 September (13).

If found guilty, the suspects could face life in prison without parole.

The incidents are the latest legal woes for the former Green Bay Packers and New Orleans Saints player.

Last week (ends21Feb14), Sharper pleaded not guilty to claims he drugged and then raped two women in L.A. as part of an ongoing investigation. If convicted in that case, he faces more than 30 years behind bars.

Court documents filed in early February (14) revealed additional allegations from alleged victims in Las Vegas and Tempe, Arizona.

The accusations have cost Sharper his job as an analyst for the NFL Network - he has been suspended without pay.