CHICAGO (STMW) — Police flying in a helicopter alerted officers on the ground who apprehended three north suburban men after they allegedly pointed a laser at the aircraft while on top of a building Saturday night in Old Town, police said.

The incident happened about 9:50 p.m. when police in a helicopter were passing over the 400 block of West Menomonee Street, police said.

The pilots noticed a beam of light shining into the cockpit and the flight crew, comprised of Chicago Police and Cook County Sheriff’s police, determined the originating location of the laser, police said.

They directed ground units from the Near North District to the suspects’ whereabouts — on the roof of a building at 450 N. Menomonee St. — and they were arrested at 10 p.m., police said.

Alvin Kang, 25, of 3644 Heritage Dr. in Northbrook, Mark Lawrence, 25, of 46 Hibbard Rd. in Winnetka, and Jeremy Smith, 24, of 9734 Keystone Rd. in Skokie were charged with two misdemeanor counts each of unlawful use of a weapon, aiming a laser pointer at an officer, police said.

Kang had an additional charge of violation of bail bond, stemming from a battery on the Near North Side on June 4, according to police News Affairs Officer Robert Perez, who said Kang was scheduled to appear for a bond hearing Sunday.

At 2 a.m. Kang was seen arguing with a woman near the intersection of Chicago Avenue and Orleans Street. When Kang left the scene momentarily, the 27-year-old man who saw the dispute approached to check on the woman’s well-being, Perez said.

“Kang came back and punched him in the face,’’ said Perez.

The victim was not hospitalized but Kang was charged with battery, according to Perez.

A laser pointer was recovered from the scene.

(Source: Sun-Times Media Wire © Chicago Sun-Times 2010. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)