After his daughter had already revealed Val Kilmer's cause of death in an interview, it has now been officially confirmed in his death certificate: Kilmer, who had been struggling with severe health issues,

The 'Batman Forever' actor died on April 1Val Kilmer’s official cause of death has been revealed.Over a week since his family confirmed the actor’s death at age 65 on April 1, Kilmer's official cause of death has been ruled as pneumonia according to a death certificate obtained by TMZ and reviewed by PEOPLE.