DETROIT -- Officers tasked with the grim job of notifying a woman about the death of her husband stumbled onto a grisly crime scene Thursday when no one responded at the suburban Detroit home, which had been left unlocked.
Inside, the woman and the couple's two young children were found dead in separate bedrooms.
Authorities were investigating whether the man killed his family then committed suicide by driving the wrong way on an interstate highway in neighboring Indiana, instantly killing a stranger too as he slammed into the man's car.
Police agencies in Michigan and Indiana spent the day trying to connect the dots.
Authorities said they hadn't turned up any suicide notes from Michael VanDerLinden, 39, who was killed in the fiery crash about 200 miles from the home where his family members were found dead.
"We have no other leads to push us to any other suspects. It's one of those puzzles you have to put together," said Gregory Laurain, the police captain in Van Buren Township, Michigan.
"There is a lot of speculation right now that it could possibly be the father. We want to get a taste of the relationship of the people who lived here ... were there problems here?"
VanDerLinden and the other driver, Juan Nelson, Jr., 45, of Portage, Ind., were killed in the predawn crash on I-94 near Michigan City, not far from the Michigan state line, said John Sullivan, the coroner in LaPorte County, Ind.
Indiana State Police say VanDerLinden had just left a highway rest area and was traveling eastbound in the westbound lanes of the freeway when he collided with Mr. Nelson's car, engulfing both in flames.
The crash closed two westbound lanes of I-94 for several hours.
Police in Van Buren Township, about 25 miles west of Detroit, were asked by Indiana authorities to notify VanDerLinden's family about the crash.
But when officers arrived about 8 a.m., no one answered the door at the two-story home with an attached garage and a children's swing set in the spacious backyard.
Neighbors told authorities that seemed odd.
"She was a stay-at-home mom, and the kids are out from school. This time of morning there should be somebody here," Captain Laurain said.
Officers went back to the house and found one of the doors unlocked.
Inside they found the bodies of the two boys -- identified by neighbors as 7-year-old Julien and 4-year-old Matthew -- in their own beds.
Their mother's body was found in her bedroom.
"There were no signs of forced entry. No signs of robbery," Captain Laurain said.
Public records showed VanDerLinden co-owned the house with his wife, 34-year-old Linda VanDerLinden.
Officials weren't confirming the identities of the bodies in the house.
Captain Laurain said a possible murder weapon was recovered, but he would not say how they were killed. Autopsies were slated for today.
Captain Laurain said officials would go over the ripped and burned wreckage from the Indiana crash "to make sure nothing is there ... no type of notes."
Computers, answering devices, and other items were taken from the home.
Officers had not previously responded to the home on any reports of domestic violence, but firefighters were called out in November after Michael VanDerLinden took some type of pills in an apparent suicide attempt, Captain Laurain said.
He said Michael VanDerLinden had ties to Belgium and performed informational technology work from home.
Rita Jones, who lives next door to the family's home, said while Linda VanDerLinden was friendly and outgoing, Michael VanDerLinden seldom made conversation with the neighbors.
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