A man will appear in court later charged with attempted murder after a knife attack at Leytonstone Underground station in east London on Saturday.
Muhaydin Mire, who is 29 and of Sansom Road, east London, is due to appear at Westminster Magistrates' Court.
A 56-year-old man was left with “serious” stab wounds and another person was injured during the attack at 19:00 GMT.
A man was arrested after being Tasered by police officers.
A video of the aftermath of the attack shows a man being pinned to floor having been Tasered by police, after which an unidentified bystander is heard shouting: “You ain't no Muslim bruv.”
Deputy Chief Constable Adrian Hanstock from British Transport Police has appealed to anyone with photos or video of the attack at the Central Line station to contact the force.
“We would like to reassure passengers and people travelling this morning is that we've increased our staff – they'll see a lot of police officers across the network, as well as some of our supporting and complementary teams that provide a more specialist response,” he said.
Commuters reported a strong police presence at Victoria Station on Monday morning, but not at King's Cross.
A Transport for London spokesman said there had been no change in the number of people using the Tube.