Vincent Inametti, 48, was taken into custody after he was sentenced, the Fort Worth Star-Telegram reported in its online edition Monday.
Inametti, who is originally from Nigeria, had worked at Federal Medical Center Carswell in Fort Worth for seven years until last fall, according to documents filed in the case. He pleaded guilty in November to two counts of sexual abuse of a ward.
Although he faced a maximum sentence of 10 years in prison, Inametti's lack of a criminal history suggested that he might get a sentence between 10 and 16 months.
But U.S. District Judge Terry Means said Inametti had violated trust as an employee of the federal prison and as a priest.