(CNN) The lone suspect in the fatal shooting of five people in a Washington state mall is in custodyafter a nearly 24-hour manhunt, authorities said early Sunday.
Four women and one man died in the shooting Friday night at a Macy's store at the Cascade Mall in Burlington.
The victims' identities have not been released.
Authorities arrested Arcan Cetin, 20, Saturday night as he walked down the street near his residence in Oak Harbor, Washington.
When officers confronted him, he did not run, he just froze and complied, said Lt. Mike Hawley of the Island County Sheriff's Office. Cetin was not armed at the time of his arrest.
"He said nothing," Hawley said. "Just kind of zombie-like."
Motive unclear
Washington state shooting suspect in custody 01:39
While more details emerged on the suspect after his arrest Saturday night, the motive remains unknown.
Cetin immigrated from Turkey and is a legal permanent resident of the United States, authorities said. It's unclear when he moved to the US.
State authorities said it's too early to rule out terrorism or anything else because their investigation is in its preliminary stages. Before the suspect's arrest, an official with the FBI had told reporters there was "no evidence at this time" of a link to terrorism.
Authorities say Cetin walked into the mall, about 65 miles north of Seattle, and opened fire with a rifle Friday night. He allegedly fled the mall afterward, sending more than 24 law enforcement agencies on a manhunt across the state.
Authorities collected evidence from the mall overnight Friday and all day Saturday as the bodies were removed from the premise. Eventually, they identified his vehicle by matching information received from a tip with surveillance footage obtained from local business.
