The non-specific threat was related to an event it said would happen on Monday.
The person who was shot was taken to Baylor University Medical Center in stable condition.
Police did not say how they died or if they are investigating the deaths as a murder-suicide, but no suspects are at large.
Zamaria Lovelace was last seen about 2:30 a.m. Sunday in the 2600 Franklin Drive.
Mesquite officers arrested the man's companion, another Wyoming prison escapee, on Sunday.
Both groups of suspects were linked to robberies in the Dallas-Fort Worth area and included three juveniles.
Ruben Castillo, 63, faces one count of criminal solicitation of a minor to commit sexual assault of a child, Mesquite police said.
Nissa Marie Chavez was last seen about 2 p.m. Thursday in the 1600 block of Gross Road.
The Mesquite Animal Shelter program matches up fixed feral cats with people who can provide them a job in farms, junkyards or anywhere they can help with pest control.
Jones said memories of the night he was shot twice by Derick Wiley, who told jurors he mistook him for a burglar, are constantly 'in my head'
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