BELTON, Mo. — A Belton man has been charged with first-degree murder and several other charges in connection to a suspicious death Saturday night.

Michael H. Tate, 57, also faces charges of armed criminal action, unlawful possession of a firearm, and tampering with physical evidence in a felony prosecution.

Tate is currently being held with no bond.

On Dec. 18, officers responded to a residence in the 600 block of N. Scott Ave. after a reported death. Police later determined that Tate was the one who called 911, court documents say.

Officers found a deceased 45-year-old woman who had been shot inside the residence when the arrived.

The woman was later identified as Mattie Eisenbrant from Belton. Police say that Eisenbrant was Tate’s girlfriend.

When Tate called 911, he initially told police he arrived at the apartment and found the front door open and Eisenbrant dead, court documents say. Police did not find any signs of forced entry, records say.

During an initial police interview, Tate told detectives he had previously served time in prison for murder, wasn’t supposed to have a weapon and gave consent to search his DNA, cellphone and vehicle.

But while searching his cellphone, court records say detectives found Tate had been searching web sites for how to remove gunshot residue from your body.

During another police interview, Tate told officers he found a notebook where he believed Eisenbrant had written she was romantically interested in another man. Charging documents say he confronted her about it, and they got into an argument.

He admitted to detectives that he got a gun from the closet and shot the woman, first in the pelvis area and then again in the head, court documents say.

Tate told police he left the apartment, gave the gun to an associate and got rid of the shell casings and his clothing, according to charging documents.