Ryan Bensley, alongside his wife, Ellie, and his children, Mason and 11-week-old Freddie, attended Autumn Lights at the Norfolk Showground.

The first display, which began at around 7pm last Saturday, went smoothly before an issue during the second show at 9.15pm.

Ryan's five-year-old son, Mason, was inches away from the firework (Image: Supplied)

A spokeswoman for the Norfolk Showground said a "full investigation" has been launched following the incident.

The Bensley family was at the front of the crowd for the display, with Mason enjoying the spectacle right near the barrier.

"We were all looking up and........

© Eastern Daily Press