UPDATE Oct. 10:

Anchorage police have identified the victim of a murder that was partially recorded on an SD card as 30-year-old Kathleen J. Henry.

Original story:

An SD memory card found in the street has led police to arrest a man for murder regarding the

.

Anchorage Police say 48-year-old Brian Steven Smith has been arrested on a charge of first-degree murder in the death of the woman who police say is listed as a Jane Doe.

Police say a woman called them Monday, Sept. 30, to say she'd found an SD card that contained video of a homicide. The woman told police she'd found the SD card in the street in Fairview.

According to charging documents, the SD card was labeled "Homicide at midtown Marriott." The memory card contained 39 images and 12 videos showing the progression of a crime.

Two days later, on Oct. 2, officers were called to Milepost 108 of the Seward Highway, where human remains were found. Police now believe the remains are of the woman shown in the video.

"Once we viewed images on the SD card, we notified our detectives in the homicide unit and they took over that part of the investigations," APD spokesman MJ Thim said.

Thim says investigators were able to quickly identify the suspect in the video because detectives were familiar with him from a separate ongoing investigation. Thim would specify neither the nature of the separate investigation nor Smith's role in it.

According to the charging documents, after police obtained a warrant for Smith's cell phone records, they were able to trace his location to the area where the human remains were found within minutes of when the last still image on the SD card was created.

Smith was arrested at the Ted Stevens Anchorage International Airport Tuesday without incident. Thim says he was returning to Anchorage when he was arrested. Thim says Smith is the only suspect in the case.

Police believe the crime took place in Anchorage in the first week of September at TownePlace Suites by Marriott in Midtown. APD says the first recording on the SD card was taken on September 4 and other images were created a few days later.

Smith faces one charge of Murder 1. He was arraigned Wednesday afternoon.