The manager of an Attleboro sober house has been arrested on child pornography charges. Michael Paterson was ordered held on $100,000 bail at a court appearance Monday. A not guilty plea was entered. Police said they arrested Paterson, 51, on Friday after a resident of the sober house saw him looking at what appeared to be child pornography on a television in his office and contacted police. Police seized three computers and as well as dozens of DVDs and CDs that they are examining. Police also found $71,000 cash and a stun gun in a safe in Paterson’s office, as well as $2,000 cash in his car.