A 20-year-old man was charged on Monday with five counts of first-degree murder after confessing to a shooting rampage at a shopping mall in Burlington, Washington, over the weekend, prosecutors said in court papers.

Turkish-born Arcan Cetin, a legal U.S. resident, was advised of the charges against him during a brief hearing in Skagit County District Court in Mount Vernon, Washington, on Monday morning and ordered held on $2 million bail.

According to charging documents, Cetin admitted to police investigators that he brought a Ruger .22 caliber rifle into the Macy's department store at Cascade Mall in Burlington, about 65 miles (105 km) north of Seattle, on Friday evening and fatally shot five people.

Source: b'An image taken from security video shows the gunman who opened fire in the Cascade Mall in Burlington, Washington on Friday night, released by the Washington State Patrol, September 24, 2016. Washington State Patrol/Handout | Source: Reuters\xc2\xa0'

Skagit County District Attorney Richard Weyrich declined to discuss a motive for the shootings. The Federal Bureau of Investigation has said there was no indication the attack was an act of terrorism, but it has not ruled out that possibility.

Cetin walked into the Macy's shortly before 7 p.m. PDT (0200 GMT), gunning down a 16-year-old girl near a rack of clothing and then opening fire on the other four victims in the make-up department before placing the gun on a cosmetics counter and walking out, prosecutors said in the court papers.

Representative Rick Larsen said on the floor of the House of Representatives on Monday that the slain girl was high school sophomore Sarai Lara, a cancer survivor.

Source: b'Authorities are pictured at the Cascade Mall following reports of an active shooter in Burlington, Washington, U.S. September 23, 2016 | \xc2\xa0Source: Reuters'

Also killed in the attack were Shayla Martin, a 52-year-old Macy's makeup artist, Boeing maintenance worker and father of two Chuck Eagan, retired probation officer Belinda Galde, 64, and her 95-year-old mother, Beatrice Dotson, Larsen said.

Wearing red and blue jail garb and shackled at the waist, Cetin showed no emotion during Monday's court appearance and spoke only to respond "yes, your honour" several times to the judge.

"It's a terrible, terrible thing and a terrible tragedy for the whole community," Weyrich told reporters after the hearing, adding prosecutors have yet to decide whether to seek the death penalty in the case.

The attack follows a series of violent outbursts at shopping centres across the United States, including the stabbing of nine people at one in Minnesota on Sept. 17. The FBI has said it considers that attack a "potential act of terrorism."

Source: b'Washington State Trooper Mark Francis speaks to the media at the Cascade Mall following reports of an active shooter in Burlington, Washington, U.S. September 23, 2016 | Source: Reuters'

Cetin was taken into custody without incident Saturday evening after police spotted him near his home in Oak Harbor, about 30 miles (48 km) southwest of Burlington.

According to the charging documents, Cetin initially walked into the mall unarmed, through a Chuck E. Cheese family entertainment and pizza restaurant, then went back to his car to retrieve the rifle from his trunk, moving the car closer to Macy's.

According to prosecutors, Cetin's father told them that he and his son had had a falling out recently.

The father said he last saw his son at dinner at about 4:30 p.m. on the day of the shooting and that his rifle, which matched the description of the murder weapon, was missing along with ammunition.

(Feature image source: Reuters)