The bizarre claims surrounding a relationship between a North Carolina man and his biological daughter took a tragic turn this week when police say he went on a rampage that claimed the life of four, including himself.

As CrimeOnline previously reported, authorities say 42-year-old Steven Walter Pladl and his 20-year-old biological daughter, Katie Rose Pladl, struck up an incestuous relationship after the adopted girl turned 18 and searched out her birth parents.

The two allegedly had a child together in September and planned to wed but were subsequently arrested and charged with an array of criminal counts including incest. They were each jailed on $1 million bond.

Authorities say the father, daughter and their 7-month-old son Bennett were among the bodies recovered Thursday at multiple scenes in three states.

Bennett Pladl was found dead at the first scene in North Carolina, according to Knightdale police, according to Crime Watch Daily.

The first shooting reportedly occurred at the home the suspect shared with his daughter. As a condition of his bond, he was no longer allowed to live at that location or have contact with his daughter or their son.

Later in the day, officiers in New Milford, Connecticut, responded to a call and found two individuals — identified as Katie Pladl and her adoptive father, 56-year-old Anthony Fusco — shot dead in front of a truck.

Finally, authorities in Dover, New York, found a body identified as Steven Pladl inside a minivan registered in North Carolina. He was reportedly dead of a self-inflicted gunshot wound.

According to CBS News, Steven Pladl’s mother, who had been caring for the young boy at another North Carolina home, contacted police Thursday morning to request a welfare check.

Steven Pladl’s bond restrictions had been loosened to allow him travel to North Carolina while Katie Pladl was required to live in New York with Fusco.

[Featured image: Steven Pladl and Katie Pladl/Police handout]