A Pickering man accused of attacking Oasis guitarist Noel Gallagher at the Virgin Festival back in September is now the subject of an arrest warrant, after he failed to show up at a scheduled court appearance Tuesday.

Daniel Sullivan, 47, was charged with assault following the onstage brouhaha that saw Gallagher being shoved into a monitor during the band's festival-closing performance on Toronto's Olympic Island.

The attack occurred as the British rock band took the stage and began performing their hit song Morning Glory. Sullivan allegedly jumped through the barriers and onto the stage, tackling Gallagher mid-tune. Noel's brother Liam threw a punch at the attacker as security moved in and took the man into custody.

The guitarist suffered a broken rib and ligament damage in his fall, but the band gamely finished their set. They were forced to postpone the final Canadian date in their concert tour, however.

It's still not clear what motivated the attack.

Footage of the incident was caught on a cell phone camera and posted on YouTube.