America's Most Wanted has included on its website the case of Dominic Maryk, 8, and his six-year-old sister, Abby Maryk.
Police believe the pair were abducted by their father last August.
Dominic and Abby were on a two week visit with their father, Kevin Maryk, 38, and never returned.
A Canada-wide warrant has been issued for the arrest of Kevin Maryk.
Police recently revealed the three may be with Kevin Maryk's nephew, Cody McKay.
Police have obtained an arrest warrant for McKay, 20. He is wanted for conspiracy to commit an indictable offence.
A recent statement from Winnipeg police said McKay was living with his uncle and disappeared at the same time as the children vanished.
