Authorities are raising the reward to $8,000 for anyone with information about a man listed as a most wanted sex offender.
According to officials Mark Timothy McBride, 59, is wanted for failure to comply with sex-offender registration requirements, parole violations and probation violations.
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In 2006, McBride was convicted in Tarrant County on three counts of indecency with a child/sexual contact for issues involving two 16-year-old girls.
McBride is said to have ties to the North Richland Hills and Fort Worth areas, but officials said they believe he might be in Alaska after having expressed interest in moving there.
McBride wears glasses and is 5 feet 10 inches tall and weighs 250 pounds.
To submit tips, people can call Crime Stoppers hotline at 1-800-252-TIPS (8477).