Van driver Matthew Tvrdon has admitted at Cardiff Crown Court to running down and killing mother-of-three Karina Menzies in a hit-and-run frenzy in the Welsh capital last October.
A dozen others were injured in the incident.
More top news
According to local reports, the repairman had failed to disconnect the power to the escalator before getting to work.
Millwall fans who caused problems at the match against Barnsley could face lifetime bans, the club said.
Counter-terrorism forces, backed by Shi'ite militias on the ground and coalition airstrikes, are moving into the city on several fronts.