ROCK TOWNSHIP, Wis. -- A woman and her two teenage children were found dead in a mobile home just outside Janesville Friday morning.

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Rock County Sheriff Bob Spoden said a family member discovered the bodies of Danyetta Lentz (pictured right), 38, and her children, Nicole Lentz, 17, and Scott Lentz, 14, and called police at about 9:30 a.m.

Authorities responded Friday morning to the Jacob's Mobile Home Park, located on Highway 51 between Janesville and Beloit.

He said investigators are still trying to determine how the three died, but all three are believed to be homicide victims.

The sheriff said that those who arrived at the scene could see the death was "obviously suspicious."

"This is a very tragic event, not only for this park but for our community, and I want to assure all the residents and member of our community in Rock County that the sheriff's department will find the person or persons who are responsible for this. We will bring them to justice," Spoden said.

The sheriff said that he had called Wisconsin Crime Lab experts to the scene and five technicians from the lab along with Rock County detectives were continuing to process the scene on Friday afternoon, WISC-TV reported.

Spoden said the Rock County coroner is expecting autopsies to be performed this weekend.

Spoden said detectives are focusing on learning each victim's background.

Neighbor Angela Puckett said that she was best friends with Lentz. Puckett described her as a single mother focused on raising her two teenage children.

Puckett said that the woman's ex-husband lives in Texas. She said she didn't think her friend or her children had any problems.

"This is why this is a shock to all of us," Puckett said.

On Friday afternoon, investigators interviewed workers at Community Action Daycare, where Lentz had worked.

Community Action is an antipoverty organization that runs a number of programs in Rock and Walworth counties. Executive director Lisa Furseth described Lentz as a "tender but firm teacher" who worked with young children.

Meanwhile, detectives canvassed the neighborhood Friday to reassure neighbors. Some neighbors gathered near the scene Friday and some were crying. There are about 30 mobile homes in the park.

Some neighbors gathered near the scene and some were crying. There are about 30 mobile homes in the park.

"It's scary because what if it's not somebody they knew? What if it's just some random thing or it's somebody in the trailer court or something?" said Linda Mitchell, a neighbor who made the 911 call from her home.

"I'm scared. I have kids, I have a little girl and we live here," said Kathy Van Zandt, a neighbor.

Neighbors said they are still in disbelief at how the likable family is now gone.

"This is just my worst nightmare because this is something you would never expect at Jacob's Homes trailer park. And they were the nicest people, the nicest people that you could ever meet," Puckett said.

The sheriff said that they were throwing all the resources they have at this case, and a strong police presence shows that they are committed to the investigation, WISC-TV reported.

Both the sheriff's department and the state Crime Lab will remain at the scene throughout the night, WISC-TV reported.

The sheriff's department said it does not yet have any suspects in the apparent homicide.