NEW LONDON, Conn. (AP) — Relatives of three Connecticut family members killed during a botched fake robbery say law enforcement officials have told them a second person will be arrested.

The relatives told The Hartford Courant that Sergio Correa is scheduled to be charged with murder Monday in New London Superior Court. He currently is detained on $1 million bail on a probation violation charge.

Correa's sister, Ruth Correa, is charged with felony murder and other crimes in connection with the December 2017 killings in Griswold. The victims included 56-year-old Kenneth Lindquist, 61-year-old Janet Lindquist and their 21-year-old son, Matthew.

Police say Matthew Lindquist was in on a plot to steal guns from his parents' home and make it look like a robbery.

Sergio Correa's lawyer says he had nothing to do with the killings.

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Information from: Hartford Courant, http://www.courant.com