WALES TOWNSHIP, MI -- Investigators are making moves in the case of April Millsap, the 14-year-old Armada Middle School student found dead in a drainage ditch along a walking trail in Armada last Thursday.
FBI agents and state police troopers served a search warrant at a home in Wales Township, located about 15 miles west of Port Huron, on Wednesday afternoon.
The connection between the search location and the Millsap case has not been revealed.
Helicopter images captured by WXYZ, Channel 7 News show evidence technicians and police at the scene.
Millsap disappeared while walking the family dog, a border collie named Penny, along Macomb Orchard Trail, where the pair walked almost daily.
The dog never left April's side, alerting two passing joggers to the location of her body.
Armada Police Officer Vesco says the cause of death will likely be 'held back' until a killer is arrested and charged.
Relatives told the Macomb Daily it appeared she'd been beaten.
'Omg. ... I think I'm being kidnapped,' said an ominous text message from April's phone to her boyfriend on the night she died.
Police on Tuesday said the family and April's boyfriend are not suspects.
Investigators have consulted with FBI experts, who say potential suspects may show an excessive interest in the case or have unexplained absences from their regular activities, police said.
Two motor vehicles may have some connection to the disappearance, police said. They include a gray, painter's-type van with many dents in it, with two white males inside, and a small-capacity blue and white motorcycle with a young male rider.
Authorities are asking anyone who was riding a motorcycle in the area last week, or who might have seen April on July 24, call the state police tip line, 877 616-4677.
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Entities 0 Name: Millsap Count: 3 1 Name: WALES TOWNSHIP Count: 2 2 Name: FBI Count: 2 3 Name: Macomb Orchard Trail Count: 1 4 Name: Armada Middle School Count: 1 5 Name: Macomb Daily Count: 1 6 Name: Penny Count: 1 7 Name: MI Count: 1 8 Name: Port Huron Count: 1 9 Name: WXYZ Count: 1 10 Name: News Count: 1 11 Name: Channel Count: 1 12 Name: Vesco Count: 1 Related 0 Url: http://ift.tt/1nFlcZc Title: Murdered Teen Texted Boyfriend 'I'm Being Kidnapped' Description: Middle schooler was found dead hours after she left her home to walk the family dog A 14-year-old Michigan girl who was found murdered last week reportedly texted her boyfriend just before her death. "Omg... I think I'm being kidnapped," was the text April Millsap's boyfriend received from her phone the night she was killed last Thursday, the Detroit Free Press reports.