The Independence Police Department has issued an Amber Alert for Makenzie R. Green, a 16-year-old Grain Valley girl who disappeared early Thursday morning.

Independence police say they are concerned about the welfare of a 16-year-old Grain Valley girl who was last seen Wednesday morning.

Authorities are searching for Makenzie R. Green, a junior at Grain Valley High School who’s a starting catcher on the Grain Valley Eagles softball team.

Police late Wednesday issued an Amber Alert for Green.

Green was last seen dropping a friend off at Grain Valley High School, 551 S.W. Eagles Parkway, at 7:30 a.m. Wednesday.

Green dropped the friend off and told her “I’ll see you later” and that she “had something to do,” according to what the friend told police.  

Green’s car was later found in a parking lot of a business at U.S. 40 and Washington Avenue in Independence, said Independence Police Sgt. Dennis Green.

Inside the car was her cell phone, purse and belongings.

Green on Monday night ended a relationship with her boyfriend and is believed to be with him, according to police. He was identified as Curtis L. Hagey, also age 16.

“I think the break-up with the boyfriend was pretty significant,” Sgt. Green said.

The boyfriend has recently made harmful threats toward Green’s father, according to police.

The missing girl left a memo to her father on her cell phone saying she was scared and that her father should come find her because she was with the ex-boyfriend, Sgt. Green said.

Hagey lives in the area of where the car was found, Sgt. Green said. Police found the boyfriend’s cell phone in a lot near where the car was found.

“We’re interviewing students at her high school, friends of hers and friends of his, talking with family members,” Sgt. Green said.

Also, police are contacting people in St. Joseph, Mo., because both have ties to people there.

Makenzie Green is 5-foot, 4-inches tall and weighs 120 pounds.

She was wearing a blue Eagles sweatshirt and black Under Armor sweatpants.

Contact Independence Police at 816-325-7333 or the TIPS Hotline at 816-474-TIPS.