OCOEE, Fla. -- In a letter sent to Local 6 News, the father of missing Ocoee woman Tracy Ocasio details why he's convinced the prime suspect in her disappearance knows what happened to his daughter.

Tracy Ocasio, 27, was last seen leaving a MetroWest bar in late May with James Hataway, who is the only known person of interest in the case. Hataway is jailed in Seminole County in an unrelated case.

Ocasio's car was found abandoned near Hataway's home shortly after she was seen on surveillance video leaving the bar with Hataway.

Her father, Joe Ocasio, said in a letter that Hataway initially tried to pin his daughter's disappearance on a former coworker. That person, however, has an alibi and is helping police, the letter said.

Joe Ocasio wrote that "conflicting changing stories Hataway gave, in addition to having her phone ping right around his house and the fact he also changed stories about her being in his house, along the many other coincidences (last to see her, car a straight 150 yards from his house, someone else dropped off her car where it was abandoned, etc...) makes us believe he either has harmed our daughter or knows about what happened to her."

Joe Ocasio also said his wife will attend a hearing on Wednesday in Hataway's court case that is unrelated to their daughter's disappearance.

Watch Local 6 News for more on this story.