A police officer approaches the persons allegedly responsible for the deaths of seven people, whose bodies were found in a ditch in the Terron area of the Ngabe Bugle region, in Bocas Del Toro, Panama January 16, 2020 in this picture obtained from social media. Picture blurred at source. Panama Public Ministry via REUTERS THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. MANDATORY CREDIT. NO RESALES. NO ARCHIVES.

PANAMA CITY (Reuters) - Panamanian prosecutors are investigating the suspected killing of seven people, including a pregnant woman and five of her children, by members of religious sect that was believed to have been performing exorcisms, authorities said on Thursday.

Officials found the bodies of the six and the child of one of their neighbors in a mass grave in the indigenous region of Ngabe-Bugle, said Rafael Baloyes, senior prosecutor of the Bocas del Toro province of western Panama.

In a video published by the office of Panama’s attorney general, Baloyes said the grave came to light after locals alerted authorities at the weekend about several families being held against their will in a local indigenous-run church where exorcisms were believed to have taken place.

“We’re talking about seven victims, six minors between the ages of one and 17,” Baloyes said. “Six from one family, the mother and her five children, and the mother was pregnant.”

On Wednesday, authorities freed 15 people being held by the religious sect. Ten sect members were arrested on suspicion of responsibility for the killings, prosecutors said.

Those rescued from the church had suffered bodily injuries, according to Alexis Munoz, a senior police official.