OMAHA, Neb. -- It was the couple's dogs that alerted neighbors to something suspicious.

"Her dogs never run loose," said neighbor Linda Graham.

"When you see a dog running loose, you know something is wrong."

The boxers' behavior led neighbors-- and police -- to the house of Steven and Carolyn Baily, where their bodies were found at 98th Street and Raymond Road near Lincoln, Neb.

Brandon Crago, 34, the only suspect in the case, was indicted in June on federal drug charges. He was just released last week under conditions that he would attend drug outpatient treatment.

Instead, police believe he went on a weekend crime spree that included home invasions, assault, robbery and eventually the death of Steven and Carolyn.

The crimes set off a 24-hour manhunt that ended Sunday night.

"It's not possible. Disbelief from all of us," Graham said. She's caring for the couple's boxers now.

Crago has not been charged in the slayings. He now faces robbery and weapons charges.

State and federal records show Crago spent most of 2006 in prison on a drug conviction.

He was released in December and, after his parole ended in 2008, he went through civil and paternity lawsuits and failed protection orders.

In April, court records show he was arrested for a minor domestic assault charge that was later dismissed.

In June, he was arrested again.

The U.S. Attorney's Office charged him with conspiracy to distribute large quantities of methamphetamine, something that happened apparently during his parole period.

On July 30, Crago requested a pretrial release, according to court records.

A judge granted it on the condition that Crago complete outpatient drug treatment.

Crago agreed and was released on Aug. 4, court record show.

The attorney's office said he began treatment.

But by Aug. 7 he had disappeared.

"It's very rare that we have a situation like this." said first assistant U.S. attorney William Mickle.

"We believe he is responsible for all three of those cases, two stolen vehicles and the deaths," said Lancaster County Sheriff Terry Wagner. "These all appear to be crimes of opportunity," Wagner said.

Detectives said they have no evidence that anyone else is involved in the crimes.

Crago is expected to appear for an arraignment Wednesday.

Steve Baily, 60, worked for Datatronics in Omaha as a printer repairman. Friends said he was an avid ham radio operator and storm spotter.

"He would call in from the road wherever he was and give us the condition. He's also the main one that kept our repeater going," Graham said.

Carolyn, 61, who was retired, volunteered with the Cornhusker Kennel Club and 4-H.

She helped the Delta Dogs Society and often took her boxer to visit patients in Lincoln hospitals.

"If you needed something, Carolyn was the first one there to help, whatever it was," Graham said.

"They were the nicest people. Who would do it?"