A man has been arrested in connection with the death of American sprinter Tyson Gay’s daughter, Trinity, who was shot in Kentucky in the early hours of this morning.

The 15-year-old was fatally wounded in a restaurant car park in Lexington when two cars of men opened fire on each other at around 4am local time.

Police say Trinity – who was a promising track star – was not a passenger in either of the vehicles, both of which fled the scene after the incident.

She is believed to have been an innocent by-stander who got caught in the crossfire.

Shortly before she was killed, Trinity managed to Tweet about the shooting when she wrote: “Of course they start shootin (sic)”.

Her Olympian father – who is the second fastest man to run 100 metres in history – confirmed her death to CNN.

He said: “She didn’t make it.  I’m so confused.  She was just here last week for fall break.  It’s so crazy.  I have no idea what happened.”

Trinity’s mother, Shoshana Boyd, told the Daily News that her daughter wanted to become “the fastest woman in the world” and to be a surgeon.

She said: “She was so innocent, she was so innocent.”

“I just want people to stop shooting and realise who they’re hurting. It’s just random. They don’t understand, they don’t understand who they’re hurting.”

Social media is already flooded with tributes to the teen.

In light of her death, people are once again calling for better gun control laws in the US.