United Kingdom, Aug. 9 -- Christopher Lambert was treated by medics and transported to hospital after collapsing during an autograph session at Steel City Comic-Con in Pittsburgh this weekend.

The Highlander star, 69, fell ill on Saturday (08.08.26) while meeting fans, prompting staff to call emergency responders and escort him from the venue, a witness informed TMZ.

Convention organisers later confirmed Lambert had left due to a "personal issue," and his scheduled photo op was cancelled. Witnesses said he appeared shaky before being placed in an ambulance and taken to a nearby hospital for evaluation.

Lambert's representatives have since said he is "perfectly OK" and recuperating in his hotel room. According to his team, he had barely...