Irene Pressley was shot as she delivered mail in southeastern South Carolina.
CNN  — 

A 22-year-old man was arrested in connection with the fatal shooting of South Carolina postal worker Irene Pressley, the Williamsburg County Sheriff’s Office said.

Trevor Raekwon Seward shot Pressley several times, the arrest warrant alleges. He has been charged with murder, the sheriff’s office said in a release Saturday.

Pressley was killed September 23 while delivering mail in Andrews, in the Lowcountry of South Carolina, about 60 miles northeast of Charleston.

Trevor Seward was arrested and charged with murder.

Investigators linked Seward to the killing after matching a fingerprint on a package found at the crime scene, according to the warrant. Seward was seen with “what was believed to be an AR-15” shortly before the shooting, and shell casings were found at the scene, the warrant states.

Pressley had worked for the postal service for almost 22 years, said David McGinnis, the inspector in charge of the US Postal Service’s Charlotte Division.

The investigation is still ongoing, the sheriff’s office said.

Seward is scheduled to appear in court November 15, according to a court document.

He was denied bond at a hearing over the weekend, CNN affiliate WCSC reported, citing Lt. Daryel Moyd of the Williamsburg County Sheriff’s Office.

A Williamsburg County court clerk told CNN Seward doesn’t yet have a lawyer.

Pressley’s funeral was Saturday, the day Seward was arrested, WCSC reported.

“She was the post office mama,” Postmaster Sharon Cameron said at the service, according to WCSC. “We keep her picture as you can see. And we will honor her at that post office now and forever.”

CNN’s Tina Burnside and Justin Gamble contributed to this report.