A Brockton man was convicted of incest against a child amongst several other charges after he victimized a child over the phone for months while in law enforcement custody.

Joseph Martinez, 42, was found guilty after a four-day trial in Brockton Superior Court, the Plymouth County District Attorney’s Office said.

Martinez was convicted of attempted rape of a child, incest, attempted indecent assault and battery on a person over 14, attempted indecent assault and battery on a person under 14 and reckless endangerment of a child. He will be sentenced at a later date.

The charges stem from Martinez’s interactions with a child over the phone between June and September 2019, while Martinez was in custody in the Massachusetts Department of Corrections.

During that time, Martinez would instru

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