Calling it "an exceptional case", Judge Peter Kelson QC jailed David Rooke for six-and-a-half years, his son Jamie Rooke for four years and wife Donna Rooke for four months.
Judge Kelson also called it "a wake up call".
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Upon his arrest, detectives found 250,000 messages sent to boys across Lancashire, Greater Manchester and West Yorkshire.
A Polish man charged in connection with the disappearance of Hull lawyer Renata Antczak has been refused bail.
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