Matthew Woods, 19, from Chorley in Lancashire, has been jailed for 12 weeks after admitting making grossly offensive comments on his Facebook page about missing 5-year-old April Jones.
He made a number of derogatory and explicit posts about April and Madeline McCann.
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Officers are appealing for information from the public to help trace a missing Warrington man.
Samuel Brown has today been jailed for 18 months for sexual offenses against a 15-year-old girl.
Emergency services are treating the incident as a suspected gas explosion at the moment. Two people are believed to be seriously injured.