Sean Mooney broke into tears when jurors determined he was guilty Friday of first degree murder for the 2008 slaying of 77-year-old Robert Deming.

Deming was shot from behind as he sat in the living room of his home.

Prosecutors had argued that Mooney killed his grandfather for financial gain because he was about to lose the free rent he received while living on his grandfather's five-acre property in the community of Schellville.

Mooney is scheduled to be sentenced on Aug. 19.

The new arrests, both in a nearby county, bring the total to six.

The Okaloosa County Sheriff's Office confirmed the arrests but declined to identify the latest suspects or release other details.

A spokeswoman said that information would be announced later Tuesday by authorities from Escambia County, where Byrd and Melanie Billings were killed. They were shot to death at their home near Pensacola last week by several intruders caught on surveillance cameras.

The couple had 17 children — four biological and 13 adopted. Nine children were at the home when the Billingses were killed.

But there may be multiple motives and more arrests are possible after three men were jailed Sunday, two of them on murder charges in the shooting deaths of Byrd and Melanie Billings at their sprawling home near Pensacola, Escambia County Sheriff David Morgan said.

"It began as what we thought was a home invasion. At this point because of the complexity and the ties this family had through the business community, we're moving many other directions. Could be money, could be a whole host of things," Morgan said on the NBC "Today" show.

Morgan also cited the family's business ties in an interview on the CBS "Early Show" but declined to be more specific and said investigators are working on "multiple motives."

Three men have been arrested in connection with the slaying and were expected to have court appearances as early as Monday. Court officials Monday morning could not immediately confirm dates or times.

A Grand Beach police officer got a call before 7 a.m. that a private security guard for Daley was holding convicted killer Charles Smith at gunpoint in a home's driveway near the mayor's vacation house in the town about eight miles from the prison, said Grand Beach Police Chief Dan Schroeder.

Schroeder said another inmate had been spotted in Grand Beach, but he didn't know which one or who saw him.

Authorities were still searching for convicted murderer Mark Booher, 46, of New Castle, and convicted rapist Lance Battreal, 45, of Rockport.

It was not immediately clear whether Daley was at the house when Smith taken into custody and Schroeder did not have any more information about Smith's capture.

The Associated Press left a message at the house where Smith was captured in the driveway.

Indiana Department of Correction officials said the men were discovered missing about 10 a.m. Sunday. The three escaped by getting past bars in the tunnels and pipe chases under the grounds of the maximum-security prison in Michigan City, Ind., said Department spokesman Doug Garrison.

Two of the inmates did maintenance work in the prison's tunnel system as part of supervised work crews. Garrison said he wasn't sure which two had done the work.

The three men were in the same housing unit but it's unclear how they knew each other, Garrison said. Prison officials were talking to people who knew the inmates, including people on their visitation or e-mail lists and family and friends.

Smith, Booher and Battreal started serving time in the late 1990s and all faced at least 30 more years behind bars.

Leslie Schuler, 36, is accused of repeatedly beating Nathaniel Turner, culminating in a brutal assault on June 21, when he's alleged to have slammed the boy's head into a wall so hard it left a dent.

The boy was declared brain dead two days later.

Schuler, of Worcester, originally was charged with multiple counts of assault, but a murder charge was added when the boy died on Saturday after being removed from a hospital ventilator.

A not guilty plea was entered on Schuler's behalf during his arraignment in Central District Court.

The boy's mother, Alicia Turner, sobbed as she watched the arraignment from the front row of the courtroom with relatives including Christine Taylor, the boy's maternal grandmother. The boy had lived with his grandmother most of his life in Eufaula, Ala., but had moved to Worcester, the second-largest city in New England, around Memorial Day to stay with his father for the summer.

Blazej (BLAH'-zay) Kot appeared in Tompkins County Court on Wednesday but didn't enter a plea. Defense attorney Joseph Joch (YAWK) says he will plead not guilty at a future court appearance. The judge says a trial isn't likely until at least November.

The 24-year-old from Auckland, New Zealand, is accused of stabbing Caroline Coffey to death on a wooded trail in a state park near the couple's Ithaca apartment on June 2. Coffey, who was 28, was a postdoctoral researcher at Cornell.

Police say Kot set a fire in the apartment and was later found with serious self-inflicted cuts. He had been hospitalized in Pennsylvania.