F1 boss Bernie Ecclestone has said a KERS system was probably responsible for the fire in the Williams pit in Barcelona.

The incident occurred about 90 minutes after Pastor Maldonado had taken victory at Spain's Circuit de Catalunya, and while the cause is still being investigated by Williams and the FIA, Bernie has laid the blame on that 'kinetic energy thing', something it should be remembered he has never been a fan of.

"I think the fire was a lot to do with that kinetic energy thing which sparked," Ecclestone confirmed to cityam.com. "It should never have been introduced.

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"It's an expensive secret because nobody knows anything about it. The public don't know and don't care."

KERS was introduced back in 2009, and despite not being used in 2010, was re-introduced last year, in part to help aid overtaking and also because it is seen as a 'green' technology.

"You could get rid of KERS and it wouldn't change the racing," Ecclestone added.

"If the teams reduced the size of their motorhomes or the team units they would need less trucks to take them there. The trucks are bigger polluters than the cars. I'm happy that the teams want to preserve all of that for their sponsors and brand image but they shouldn't talk rubbish."