This is the terrifying moment revelers ran for their lives after a gunman opened fire shooting five during a 600-strong party in a Texas park. 

Two people were critically wounded and three injured in the shooting at Village Creek Park in Fort Worth at 6.30pm on Sunday. 

Officer Buddy Calzada revealed around 600 people had gathered to set off fireworks when around 30 gunshots were heard. 

Adrian Gallardo, who lived across the street, told the Star-Telegram he had heard shots and saw 'people running everywhere'. 

Video footage posted to Twitter showed youngsters running across a road away from the park.

Others hid behind cars as gunshots mixed with screams pierced the air.