Two adults and two children were found dead with gunshot wounds in their home in Romeoville, Illinois, police announced Monday. (Credit: WBBM)

(CNN) -- Police in a quiet community about 50 miles from Chicago are investigating the deaths of a family of four, including two children, whose bodies were found in their own home Sunday night.

The family's two adults, two children and three dogs had gunshot wounds when they were found dead in their Romeoville, Illinois, home, authorities said.

Police do not consider the deaths a murder-suicide and are investigating the incident as a murder, Romeoville Police Department Deputy Chief Chris Burne said Monday at a news conference.

The adult victims were identified as Alberto Rolon, 38, and Zoraida Bartolomei, 32, and the two children were boys, according to the Will County Coroner's Office.

Deputies were dispatched to the home in the 500 block of Concord Avenue for a wellness check after one of the family members failed to show up for work Sunday and calls from relatives went unanswered, prompting concern, Burne said.

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Police believe the shooting occurred sometime between 9 p.m. on Saturday and 5 a.m. on Sunday.

"We are not asking anyone to shelter in their place. We are not actively looking for anyone in the area, but we always ask our residents to have a good sense of self-awareness and to report anything they may see as suspicious," Burne said.

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Police tape surrounded the scene Monday, as police were seen removing items from the house and putting them into a police van, according to a video from CNN affiliate WBBM.

Carol Love, who lives next door, told WBBM she was at her home during the time given by police, but didn't hear anything.

"I want to know what's going on. It's very, very quiet. It's incredibly quiet," another neighbor, Dan Lugo, told WBBM. "These things don't happen here. It's very puzzling. I'm sure the whole neighborhood is shocked."

The two children attended R.C. Hill Elementary School, according to a message posted by district Superintendent Rachel Kinder, who called their deaths a "senseless act of gun violence."

"This violent incident and the losses are sure to raise many emotions, concerns and questions throughout our school community," Kinder said.

The school is offering mental health resources and counseling to their families, according to the message.

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