Officials have released the 911 call made by Caleb Flynn. He's charged with murdering his wife, Ashley Flynn. (Credit: Ashley Flynn/Facebook, Miami County Jail and Miami County Municipal Court)

Michigan officials have identified the parents found dead with their six children inside their burning home, a case being investigated as a murder-suicide.

Six children and two adults were found dead inside a Grand Haven Township home Friday after officials responded to a house fire, the Ottawa County Sheriff's Office said. All eight had gunshot wounds, prompting a suspicious death investigation.

Officials on Monday identified the adults as Kristopher Karolkiewicz, 47, and Amanda Karolkiewicz, 39. Authorities did not name the children but said they were four boys ages 15, 12, 11 and 5 and two girls, both 11. Two of the children were adopted.

8 FAMILY MEMBERS, INCLUDING 6 CHILDREN, FOUND DEAD IN MICHIGAN FIRE; AT LEAST ONE VICTIM SHOT: POLICE

Kristopher and Amanda Karolkiewicz are pictured together at left. The couple and their six children were found dead Friday inside their Grand Haven Township, Michigan, home, where Ottawa County sheriff's deputies responded to a fire, right. (TikTok/@MandyKarol and WXMI)

Kristopher Karolkiewicz, the father and husband, is believed to be the suspect in the murder-suicide, the sheriff's office said.

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Authorities said Karolkiewicz started the fire in numerous places throughout the house after carrying out the murders.

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Authorities investigate a home in Grand Haven Township, Michigan, after eight family members, including six children, were found dead. Police said at least one victim had been shot. (WXMI)

"The cause and origin of the residential fire remains under investigation by Michigan State Police arson investigators. However, preliminary indications are that the fire was intentionally set in numerous places throughout the interior of the residence. The family pets also perished due to the fire/smoke," the sheriff's office said in a press release.

Amanda and her two adopted daughters had returned in mid-July from a vacation in China, where she took them to Shanghai Disneyland, according to her TikTok.

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The Grand Haven Fire Department initially responded to reports of people being able to smell smoke in that area between 8:30 a.m. and 9 a.m. on Friday, but firefighters couldn't locate a fire.

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A home in Grand Haven Township, Michigan, where eight family members, including six children, were found dead after a fire Friday. Authorities said at least one victim had been shot. (WXMI)

Amanda's stepfather, Steve Lawwill, wrote that he was "so grateful for the joy they brought into our life" and that the family is "just so shattered."

Just before 11:45 a.m., officials returned to the 14900 block of Riverside Trail after receiving reports of white smoke coming from a home there.

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The Ottawa County Sheriff's Office said there are no additional suspects.

Adam Sabes is a reporter for Fox News Digital. Story tips can be sent to Adam.Sabes@fox.com and on Twitter @asabes10.

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