In a tragic incident in Kansas, a man allegedly called his girlfriend 18 times within two minutes and sent her derogatory messages before fatally shooting her at a party he had forbidden her to attend, according to police reports. The 20-year-old victim was killed just days shy of her birthday.

Witnesses at the scene reportedly identified the suspect as the woman’s “crazy boyfriend,” according to details found in Kevin Calamaco-Morales’s arrest affidavit. This statement was captured by Kansas City Police officers on their body cameras.

Calamaco-Morales, aged 22, now faces charges of first-degree murder and unlawful discharge of a firearm in connection with the death of Ana Juarez. The affidavit reveals that Juarez was attending a Halloween party in the early hours of November 1, when Calamaco-Morales flooded her phone with calls and texts.

According to the affidavit, a partygoer noted that Juarez ignored and declined the calls and texts before Calamaco-Morales began shouting her name from outside. One of Juarez’s friends told authorities that the relationship seemed “toxic” and that Calamaco-Morales was angry about Juarez attending “house parties” during the holiday.

The affidavit further alleges that Juarez confided in her friend about Calamaco-Morales’s controlling behavior, saying, “Kevin is controlling and always wants to know where she is and what she is doing, dictating her actions.” Earlier that week, Juarez had reportedly told her friend that Kevin wouldn’t allow her to join the Halloween festivities.

Calamaco-Morales found out where Juarez was on the night of the shooting and began calling and texting her, according to police. He allegedly made 18 phone calls in a span of two minutes starting at 4:21 a.m., the affidavit says.

“You deada—?” Calamaco-Morales allegedly wrote in a Facebook message to Juarez.

“Deadaaa bro?” Calamaco-Morales repeated, according to the affidavit. “Ight bet,” he allegedly said, adding, “You’re out the f—ing house h— a— b—.”

Police say Calamaco-Morales went up to the porch of the home where Juarez was partying and shot her dead as she exited through the front door. Juarez’s friend who spoke to investigators said she “thinks that Kevin was the shooter because of his attitude towards and with Ana,” noting how she “doesn’t do what he wants” and has seen Kevin with guns before, according to the affidavit.

Multiple people identified Calamaco-Morales as the alleged suspect and police went to his house, where he was arrested. He was booked into jail by the Kansas City Police Department on a $500,000 bond and is scheduled to appear in court on Dec. 16.