OMAHA, Neb. (WOWT) -- A suspect has been booked into the Douglas County Corrections on a charge of criminal homicide, according to the Omaha Police Department.
Authorities confirmed to 6 News, officers took James Fairbanks, 43, into custody.
On Saturday, OPD officers were called to a residence near N 43rd and Pinkney Streets for a shooting. Upon arrival, officers said they found the body of Mattieo Condoluci, 64, inside.
The murder victim, Mattieo, spent 2.5 years in jail for sexually assaulting a child in Sarpy County in 2006. He was previously convicted of attempted lewd or lascivious acts in Florida in 1994.
James Fairbanks is accused of shooting him to death. Investigators tell 6 News they believe Fairbanks is the same guy who wrote a confession email to us and other media organizations Monday.
In the letter believed by investigators to be written by him -- he said he "felt sick to his stomach" with how the sex offender watched neighborhood children. And that the "messed up judicial system" will punish him more than the other guy got for sexually assaulting a child.
His ex-wife tells 6 News that while she doesn't understand what happened he told her it was what had to be done.
Investigators tracked down Fairbanks last night near David City -- more than an hour west of the metro.
Kelly Tamayo, Fairbank's ex-wife, said Fairbanks called her to confess what he did.
"I understand how that all built up for him and he just snapped," said Tamayo.
In the email circulated to the media, he apparently wrote that he has 'his own experiences with these types of predators' and that he couldn't 'in good conscious allow' Condoluci to victimize anyone else.
Fairbanks said he was looking for an apartment in the neighborhood -- and spotted the guy 'pretending to wash his truck', but was really 'staring at a group of kids playing in the street.'
"I know this isn't the right thing and we can't condone killing by any means -- but somebody has to take into consideration all the factors here. We can't protect our kids in any other way from these people. We're just supposed to accept it when they move into our neighborhood," said Tamayo.
The suspect, James Fairbanks, has been working at the Omaha Public Schools middle school alternative program since December. He was previously a paraprofessional at Morton Middle School.
This is a developing story. Check back for updates.