The Jackson 5 star died in the US aged 70 on Sunday, and police have confirmed he was taken in an ambulance to hospital earlier that evening following the incident in the state of New Mexico.
"An officer was flagged down near the American Heritage Plaza located at 702 US Highway 491," the Gallup Police Department said in a statement.
"The officer was alerted to an individual requiring medical attention and promptly requested an ambulance.
"The individual was subsequently transported to a local hospital in Gallup, NM, where he was pronounced dead."
A cause of death is yet to be given, but the person was identified as Tito.
"This information is derived from a preliminary investigation that is still ongoing.
"Investigators are actively interviewing witnesses and examining both physical and electronic records."
Jackson's final post on Instagram came just days before his death when he shared his experience of visiting a shrine dedicated to brother Michael - who died in 2009 - during a trip to Germany.
View this post on Instagram A post shared by Tito Jackson (@poppa3t)
"Before our show in Munich, my brothers Jackie, Marlon, and I, visited the beautiful memorial dedicated to our beloved brother, Michael Jackson," Tito Jackson wrote alongside a picture of him admiring the memorial.
"We're deeply grateful for this special place that honours not only his memory but also our shared legacy. Thank you for keeping his spirit alive."
The brothers were in Germany as part of a tour as the Jackson 5 with the revived group featuring Tito alongside his son Taryll, 49, and brothers Marlon, 67, and Jackie, 73.
Their final show together was in Munich, Germany on September 10.
After Tito's death, Taryll shared a statement alongside his brothers Taj, and TJ - who performed as pop group 3T - paying tribute to their father.
"We are shocked, saddened and heartbroken. Our father was an incredible man who cared about everyone and their well-being," he wrote in an Instagram post.
"Some of you may know him as Tito Jackson from the legendary Jackson 5, some may know him as 'Coach Tito' or some know him as 'Poppa T'.
"Nevertheless, he will be missed tremendously. It will forever be 'Tito Time' for us. Please remember to do what our father always preached and that is 'Love One Another'. We love you Pops."
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