A Boston man who has been an area Little League coach was ordered held on $150,000 bail today after being charged with possessing child pornography.

Andrew McKinnon, 48, who lives in the South End, was also charged with distribution of material that depicted a nude child, according to court records.

McKinnon was arrested at his apartment Thursday evening following an investigation by the State Police Crimes Against Children Task Force.

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During an undercover investigation June 25, a police officer directly connected to McKinnon’s home computer and downloaded several digital files containing child pornography, according to a criminal complaint filed in Boston Municipal Court.

McKinnon was placed under arrest Thursday after officers from the Crimes Against Children Task Force and federal Homeland Security Investigations executed a search warrant at his residence and found the files.

McKinnon appeared in court Friday morning in a black T-shirt, tan shorts and sandals, but he did not speak.

His attorney, Michael Roitman, said during the arraignment that McKinnon has no criminal record and is a graduate of Northeastern University.

If McKinnon posts bail, a judge ordered, he must undergo GPS monitoring and stay away from schools and children.