The search for the person who shot and killed two people in a Frederick County home, leaving four children unharmed, has expanded, officials said.

The Frederick County Sheriff’s Office said it is investigating the deaths of 33-year-old Crimea Baker, of New Market, and 34-year-old Sean Lange, of Arlington, Virginia, as a double murder.

Deputies responded to the 7000 block of Mandalong Court in New Market around 7 a.m., about six hours after the shooting, on Aug. 25. Baker and Lange were found in an upstairs bedroom with multiple gunshot wounds, police said.

Four children inside, all 13 years old or younger, hid overnight and one of them called emergency services in the morning. Social services and other agencies are assisting the children, according to the sheriff’s office.

The Baltimore Banner thanks its sponsors. Become one.

Investigators said they recovered 42 shell casings from inside the home on a quiet Frederick County cul-de-sac. There is no other weapon description.

“I can assure the public and the families of the victims, we are going to do everything we can to bring this person or persons to justice,” Frederick County Sheriff Chuck Jenkins said.

Search goes beyond Maryland

The search is going beyond Maryland with more manpower added to the case, Jenkins said.

While Jenkins did not go into detail about what agencies are involved in the investigation, he said investigators interviewed Baker’s ex-husband who lives in Miami.

“We have talked to the ex-husband in Miami. He alibied, so we’re checking into the information he gave us,” Jenkins said.

The Baltimore Banner thanks its sponsors. Become one.

Child called 911

Doorbell cameras captured the sound of the shots ringing through the neighborhood, according to the Frederick County Sheriff’s Office.

Jenkins said one of the children called for help in the morning. According to a recording of the dispatch call, that child is 10 years old. Baker is the mother of all four children, and Lange is the father of one of the children, the sheriff said.

“I can’t imagine what was going through their mind,” Jenkins said. “They were hiding throughout the house and at some point, I guess, they felt safe enough to come forward and find out what was going on to make the call.”

Jenkins called this case “unique” and unlike anything he’s seen in his 34 years in law enforcement.

Investigators believe Baker and Lange were living together at the time and were targeted, officials said.

The Baltimore Banner thanks its sponsors. Become one.

At a vigil for the victims on Friday, Jessica Wilson said she’s known Baker since elementary school and that they grew up together in Illinois.

“We’re like sisters. She was just such a fun human being,” Wilson said. “We’re praying for justice for both Sean and Crimea, just so that the kids can have some sort of peace.”

Many remembered Baker’s bright personality, taking time to share stories while lighting candles and laying flowers.

“I knew as soon as I met Crimea that she was somebody that I wanted to have in my life because she was just so beautiful and she was such a good person,” said Tiffany Poston, Baker’s friend.

The Frederick County Sheriff’s Office said there is no threat to the public and asked anyone with information to reach out to detectives at 301-600-3640.

The Baltimore Banner thanks its sponsors. Become one.

WJZ is a media partner of The Baltimore Banner.

Correction: This story has been updated to correct the spelling of Mandalong Court.