Darren Yarlett, 36, was driving home in Southgate but police had cordoned off roads near the station.
The force tweeted: "Southgate Tube station is now closed whilst officers respond to a suspicious package".
The incident comes as officers investigated a suspicious package.
Police were called to reports of the small blast at Southgate tube station, which has caused long delays on the Piccadilly line this evening.
Police said a small number of people were treated at the scene.
Woman Yelling 'Allahu Akbar' Slashes Two With Blade In France
A search of the woman's home was underway Sunday afternoon, to know whether "she has links or not with Daesh", said BFMTV . In the French Toulon woman with a knife shouting " Allahu Akbar! " attacked the visitors of the supermarket.
Police said they had been called to reports of an explosion and people running at Southgate station at 7:03 p.m. (1803 GMT).
Police add that the explosion "appears to have been minor", with no serious injuries believed to have occurred. Cordons are in place and officers remain at the scene. I was outside the station about to enter the 125 bus.
Police have evacuated a Tube station during rush hour after an "explosion" left a number of people injured. Officers are at the scene.
There is now no Piccadilly line service between Arnos Grove and Cockfosters.
More information to follow.