Stephen McIlvenna, 40 and from Randalstown, was killed during Tuesday evening's qualifying session in an incident at the Mountain Mile."McIlvenna was an experienced racer who first competed in the Manx Grand Prix in 2005," a statement from the Manx Motor Cycle Club said."He won the 2009 Junior Manx Grand Prix. He also competed in the TT Races in 2010."The Manx Motor Cycle Club wish to pass on their deepest sympathy to Stephen's family and friends."The Coroner of Inquests has been informed and an investigation into the circumstances of the accident is underway.Sports Minister Carál Ní Chuilín has expressed her shock and sadness over the death."Stephen was an experienced rider who clearly loved the sport of motorbike racing. He was a regular competitor on the Isle of Man and his death is a tragedy."I extend my condolences to Stephen's family and friends. My thoughts are with them at this difficult time," the Sinn Féin minister said."This latest motorsport tragedy comes days after Timothy Cathcart was killed at the Ulster Rally."Once again, I appeal to everyone involved in motor racing events - competitors, marshals, organisers and spectators - to take the utmost care and pay due regard to safety."