Missing Florida mother found buried in shallow grave in Alabama as her ex-boyfriend is arrested

A missing Florida mother's body was discovered in a shallow burial in Alabama late Saturday night, April 2.

Cassie Carli had been gone for about a week when she was discovered.

Officials announced on Sunday, April 3 that she vanished while on her way to pick up her daughter Saylor from her ex-boyfriend in a custody swap.

Carli's body was discovered in a barn in Springville, about 300 miles north of where she was last seen in Navarre Beach, according to Santa Rosa County Sheriff Bob Johnson.

The property has ties to Carli's ex-boyfriend Marcus Spanevelo, who is presently in detention, according to the sheriff, who did not elaborate on the connection.

According to the sheriff, Spanevelo faces charges of tampering with evidence and presenting false information in connection with the investigation.

Following the results of an autopsy slated for Monday, April 4, more charges against Spanevelo are expected to be filed.

She went missing one week ago on Sunday, April 3, after going to Navarre Beach in Pensacola to pick up her 4-year-old daughter, Saylor, during a custody exchange with the child's father, Spanevelo.

Sheriff Johnson anticipates Spanevelo to be extradited from Tennessee to the Santa Rosa County Jail.

He was charged with his current offenses after reportedly stealing Carli's phone and disposing of it. He also "lied a couple of times in different settings," according to the sheriff.

According to the sheriff, "I think we have a great case. And I think he’s going to either spend the rest of his life in prison or get the needle."

Johnson said: "He was totally uncooperative. He never cooperated with us. And that goes a long way. It’s your baby’s mother and she’s missing — and you’re not going to cooperate with authorities? That’s pretty tell-tale."

On Wednesday, March 30, Spanevelo was interviewed by officials in Birmingham, who confirmed that Saylor was safe.

In Tennessee, police placed him under observation, which culminated in his arrest by the Tennessee Bureau of Investigations and Tennessee Highway Patrol on Friday, April 1.

Saylor, the couple's daughter, is in the custody of the Tennessee Department of Children and Families.