Two teenagers suffered serious injuries when they were attacked on a street in Manchester on Saturday afternoon.
Three cars pulled up on Briscoe Lane, Newton Heath before the passengers got out and attacked a group of young people.
Police are appealing for anyone who witnessed the incident to contact them.
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Greater Manchester Police said "inquiries are ongoing to fully understand the circumstances of the incident."
Business Secretary Greg Clark said talks with Peugeot's boss over a potential Vauxhall takeover were both "constructive and reassuring".
He served in Margaret Thatcher's Cabinet as Home Secretary in 1989 and was also a former Governor of Bermuda.