A rail replacement bus service is now in operation and will be serving stations between Victoria and Brixton.
It will not be stopping at Green Park station.
More top news
Paramedics attended a scene in Willesden, north-west London, on Monday afternoon where they found the teenager with stab wounds.
At least five people have suffered minor injuries but the cause of the blast is still unknown.
A songwriter from Harlesden who wrote a track for Beyonce's Lemonade album has been nominated for a Grammy Award.