ORANGE COUNTY, Fla. — The four children taken hostage by a man accused of shooting an Orlando police officer have died after a standoff that lasted for about 20 hours, police said.
READ: Long criminal past, rocky relationship led up to shooting of officer, four kids' deaths
Orlando police Chief John Mina announced early Tuesday morning that suspect Gary Lindsey, 35, shot and killed the children – two of whom were his own – and then killed himself.
Later Tuesday, the attorney representing the family
and released photos and the names of the young victims.
Click here to donate to the family's funeral expenses
"We had been working very hard during this long day to bring this situation to a peaceful resolution. Unfortunately it has a very tragic and sad ending,” Mina said. “Our hearts go out to the family of those four children."
Read: How to cope with fear, sadness after a mass shooting
Mina said negotiators lost communication with Lindsey around 8:30 p.m. Monday because of a poor connection. Lindsey was using a Wi-Fi phone that did not have cellular service. When SWAT team members moved in to bring him a phone, they could see that one of the children was dead. Lindsey's body was found in a closet.
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[ Video: Family members grieving loss of four children killed during standoff ]
Two of the children were found dead in one bedroom and the two others were found dead in a second bedroom.
At a press conference Tuesday evening, Mina said that during the negotiations, there was never any indication that Lindsey threatened the children.
READ: Long criminal past, rocky relationship led up to shooting of officer, four kids' deaths
Investigators still don't know the timeline of when Lindsey killed the children.
"There was no indication of an imminent threat. There were no sounds of voices of the children," said Mina.
Mina said Lindsey had five guns in his possession--two rifles, two shotguns and a handgun. The guns were passed on to Lindsey by his dead father.
[ Photos: Scene of standoff where Orlando officer was shot ]
Mina said officers were working hard to gather as much information as they could about what was going on inside the apartment without provoking Lindsey.
Skywitness 9 was over the scene of the standoff late Monday. The windows of the apartment appeared to be broken and there were no lights coming from the apartment.
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Watch below: Police update as standoff comes to tragic end
The standoff started late Sunday night when police said Lindsey beat an ex-girlfriend, who called police to report a domestic dispute at the Westbrook Apartments complex on Eaglesmere Drive, just north of Universal Studios.
Mina said the children were not part of the original domestic violence call.
Read: ‘He’s extremely strong’: Orlando officer who was shot remains critical
Lindsey opened fire when officers arrived, shooting Officer Kevin Valencia through the door, police said. Sources told Channel 9 Valencia was shot in the eye. Fellow officers rushed Valencia to Orlando Regional Medical Center where he underwent surgery early Monday morning. Mina said Valencia suffered "very significant injuries," but is expected to survive.
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“Everyone is sending prayers for Kevin and his family,” Mina said.
[ Read: Community, law enforcement send well-wishes to wounded Orlando police officer ]
Police evacuated residents from the Westbrook complex shortly after the standoff started. Many of them spent Monday morning at a McDonald’s, before police relocated them to a nearby Holiday Inn. Police started to allow residents back into their homes Tuesday morning.
[ WATCH: Residents describe chaotic scene where officer was shot ]
Court records show Lindsey had an extensive criminal history. Paperwork shows three arrests since 2004. In 2009, Lindsey pleaded no contest to charges of arson and fleeing or attempting to elude a law enforcement officer after investigators said he sent an Orange County home after an argument with his girlfriend.
Read: How to cope with fear, sadness after a mass shooting
Records show he received 35 years of community supervision, and while under supervision, he has been picked up for a series of probation violations, culminating in 2012 with an aggravated battery and aggravated assault charge in Orange County, stemming from a fight with another girlfriend.
[ Read: Who is Gary Wayne Lindsey Jr., the man accused of shooting officer, taking 4 children hostage? ]
Lindsey was released when the state couldn't file charges after 30 days.
If you or anyone you know is the victim of domestic violence, click here for resources to get help.