At least two people have died in a mass shooting in Texas, US media is reporting.

The shooting at Greenville, outside Dallas, injured over a dozen people, reporter Jason Whitely said.

Police have not confirmed the incident, which was initially reported as a homecoming for students at a university, Texas A&M Commerce.

Jason Whitely

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@JasonWhitely

#BREAKING: Mass shooting happened at a Homecoming party at Texas A&M Commerce overnight. At least two fatalities. More than a dozen injured. A .227 caliber rifle is believed to be used. Motive unknown. Commerce, Texas is in Hunt County — an hour east of Dallas.

The university police said there had been “no active shooter situation in Commerce.

“There was an event outside Greenville, TX, that may or may not have involved students at this time.”

Ground and air ambulances were reportedly at the scene, according to The Dallas Morning News. (Agency report)