The custodian at a Far Rockaway synagogue was arrested last week for molesting the son of a congregant in the house of worship's basement over a two-year period, police officials say.
According to court papers, Marczewski reached down into the pants of the unidentified youth, who is now ten years old, and fondled him on several occasions between September of 2006 and July of this year.
Sources say that the boy finally got up the nerve to tell his parents about the abuse and they reported it to the police.
The arrest last week was made by Detective Cecilia Papaleo of the Queens Special Victims Squad.
Marczewski was arraigned on September 10, charged with first degree sexual abuse, a course of sexual conduct against a child and endangering the welfare of a child.
Bail was set at $25,000 and his next court date was set for September 29.
Should he be convicted of the top offense of the charges, Marczewski could serve up to seven years in prison.
Calls to Congregation Kehelas Jacob for comment went unreturned.