Nicolas Cage’s ex Christina Fulton issued a statement after their son, Weston Coppola Cage, allegedly attacked her and left her with “serious injuries” and was subsequently charged with felony assault with a deadly weapon, RadarOnline.com has learned. Weston is Cage’s oldest and only child with Fulton. The 33-year-old musician and actor was arrested and charged Wednesday after turning himself into a Los Angeles police station. He has been released on a $150,000 bond. PEOPLE was the first to report that Fulton issued a statement, which noted that on April 28 she received urgent messages from fr…