>> A homemade bomb blew up on a London underground train on Friday in what police say was the fifth terrorism attack in Britain this year. 22 people suffered burns or were hurt in the stampede to get off the train. None of the injuries were thought to be serious.
The bomb went off during the morning rush hour at Parsons Green station in West London. I'm Reuters Jake reporting from the police cordon surrounding Parsons Green tube station. Authorities now say they believe this was an improvised explosive device. We've spoken to eyewitnesses who described the panic that ensued when it went off.
>> People shouting, and screaming, so I just run out as well. Let's see, like I said Parsons Green being a small train station. It's very tight. There's isn't a lot of space for everyone to get out at the same time, so people pushing each other, people are dropping on the floor.
>> Unverified images from social media show a burning bucket with wires sticking out of it, British media reporting it was a bomb with a timer. A manhunt is now under way. London's Mayor, Sadiq Khan said, but it's not clear if police have a specific suspect in their sights.
Prime Minister Theresa May convening Britain's Cobra emergency response committee. While US President Donald Trump tweeted another attack in London by a loser terrorist. Four attacks blamed on terrorists have killed 36 people in Britain this year. In the deadliest in May, 22 people were killed in a suicide bombing at an Ariana Grande concert.
Many of them teenage fans. And this isn't the first time London's Tube has been the target. In 2005, four British Islamists carried out suicide bomb attacks on three London Underground trains and a bus. They killed 52 people.