ATLANTA – Elias Abuelazam was about to board a plane for Israel when police arrested him in a three-month stabbing spree that left five men dead, 13 others wounded and a Michigan city in terror.

In the moments before the bald, pudgy man in flip-flops and shorts was handcuffed, passengers saw him nervously talking on his cell phone, insisting he wasn’t violent.

The Israeli citizen and legal U.S. resident was charged Thursday in just one case out of Flint, Mich., the battered industrial city where most of the stabbings occurred, but authorities said more charges are expected there and in Ohio and Virginia. At least 15 of the 18 victims were black, but it was unclear whether the attacks were racially motivated.

Flint residents hope the arrest ends their summer of fear. Roughly every four days since late May, the killer approached men on lonely roads at night, asking for directions or help with a broken-down car. Then he’d pull out a knife, plunge it into his victim and speed away. In one case, he used a hammer. The youngest victim was 15; the oldest 67.

Abuelazam, 33, was arrested late Wednesday at a boarding gate at Hartsfield-Jackson Atlanta International Airport shortly before his plane departed.

Passengers on the flight that Abuelazam intended to take to Tel Aviv were stunned, but said Abuelazam appeared tense at the gate. He was talking to someone on his cell phone “about not being violent and different things like that,” passenger Eugene Williams said after the plane landed in Tel Aviv.

Abuelazam’s mother, Iyam al-Azzam, told Israel Radio that she talked to her son by phone before he was supposed to board “and he sounded the same as usual, quiet and calm.”

She was getting ready to pick her son up at the airport when relatives told her he had been arrested. “I do not believe these charges are true,” she said. “Elias, my son, is a religious, God-fearing man who always assists anyone who needs help.”

In Michigan, Genesee County Prosecutor David Leyton said authorities don’t know the motive for the stabbings, and that despite the fact that most victims were black, there is no evidence that race played a role.

A tip received late Tuesday led police to a market near Flint where Abuelazam once worked. Leyton said investigators talked to employees, and a store video showed that he matched the description of the man wanted by authorities.

Antwione Marshall, 26, of Flint, the victim of the July 27 stabbing in which Abuelazam has been charged, told The Associated Press that he identified Abuelazam as his assailant when the FBI visited him at 3 a.m. to show him a photograph of the suspect.

Marshall said he wants to “retaliate,” but “I’ll let God handle it. Every time I look at my scar, I get angry.”

Abuelazam was living in Flint, where his uncle owned two adjacent homes. Leyton said police searched them and removed evidence, but he declined to describe it.

The suspect left his vehicle in Michigan and flew Wednesday to Louisville, Ky., then to Atlanta, the last stop before the planned international flight. Leyton said Abuelazam’s uncle bought him the plane ticket, which cost about $3,000, and is now cooperating with police.

A judge in Flint signed a warrant Thursday charging Abuelazam with assault with intent to murder in connection with the stabbing of Marshall. Authorities suspect him of stabbing a total of 14 men in Flint, one in Toledo, Ohio, and three in Leesburg, Va.