Authorities in the Dominican Republic have detained eight people in the slaying of American teacher Patricia Ann Anton, according to a report.

Among those in custody is a Haitian maintenance worker in the apartment complex that Anton had moved into just two days before she was found dead Tuesday with her feet and arms bound, the Dominican Republic newspaper Hoy reported Thursday.

Federal police are working with an apartment complex tipster, identified as a foreigner who has lived on the Caribbean island since 1982, the newspaper said.

Police are also reviewing security camera footage from near the building where Anton lived, Hoy said.

Anton, 63, of Michigan, was working as a teacher on the island, and police believe she was tortured before she was tied up and killed.

There were no signs of forced entry, suggesting she knew her killer.

Anton’s cellphone, laptop computer and plasma television were missing, police said.

The Italian-born teacher was a curriculum program director at the Mariposas Montessori elementary school in Cabarete, one of the country’s poorest regions.

An autopsy is pending.