Rowley said most of the injuries were due to "flash burns", while others were wounded by the stampede as passengers ran out of the station in panic.
Britain's top counter-terrorism officer said the blast was the result of an improvised explosive device. A flaming bucket was seen with what appeared to be wires protruding from the bag holding it was seen in a photo shared on social media.
Police are treating the explosion at Parsons Green station as terrorism.
The Metropolitan Police were equally quick to dismiss Trump's accusations that the force was aware of the attacker before the explosion, calling his comments "speculation". He said a manhunt was underway following the explosion.
White House Says It's 'Clear' Comey Broke the Federal Law
The White House says Comey's testimony is inaccurate, and claims that he broke the law when he leaked the memos. President Trump picked the person that he wanted. "That's not up to me to decide.
He told BBC 5 live: "Flames were still coming out of it when I saw it and had a lot of wires hanging out of it - I can only assume it was done on objective".
According to reports, Downing Street said that British Prime Minister Theresa May " was receiving regular updates" on the situation. "It happened just as we were pulling up to the Tube station so everyone just sort of piled out of the Tube, and there was a distinct smell of burning", one witness, identified only as Luke, told the BBC.
May also said the British terror threat level would stay at "severe" rather than raising it to "critical", although this would be kept under review. The previous four killed 36 people, and police said six other significant plots, soon to be prosecuted, were thwarted before they occurred.
The man said people were trampled when they fled the train after hearing a whoosh and seeing flames race towards them.
National security adviser H.R. McMaster got elected to mop up Trump's mess, telling reporters this afternoon POTUS had been speaking broadly about Scotland Yard.