ATLANTA -- Police have made an arrest in the fatal shooting of a woman on a busy crosswalk in Midtown Atlanta.

Trinh Huynh, a 40-year-old lawyer, was shot several times as she walked across Peachtree Street Monday morning.

Investigators released video showing the man they believed was involved in the shooting. Atlanta Police Homicide Lt. Ricardo Vazquez said Monday the gunman walked right up behind the 40-year-old, shot her in the back and took off the way he came.

On Tuesday, police announced that 39-year-old Raylon Browning of Roswell had been arrested in the death. According to investigators, Browning ran a red light in Cobb County at about 9:00 p.m. Monday. The officers who pulled him over found out that Browning was already wanted on aggravated assault charges in the April 2 stabbing of two other people.

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Upon searching Browning's vehicle, officers found a weapon which they believe is the gun that was used in Monday's shooting.

The APD investigator in charge of the aggravated assaults case notified Atlanta homicide detectives. Someone also made a tip to Atlanta Crime Stoppers identifying Browning as the suspect in the crosswalk murder.

"This only really begins the investigation," Atlanta Police Deputy Chief Darryl Tolleson said. "There's so much more that's part of this case that we still don't know."

Police said Browning got into an altercation on April 2 at 1180 Peachtree Street that led to the stabbing in that incident. Browning knew the victims in that case, which is how police got Browning's name. The victims in that case are in stable condition, Tolleson said.

Investigators did not indicate why Huynh may have been targeted. It's not yet known if Browning knew Huynh.

The investigation is ongoing.

Browning is scheduled for his first court appearance, at the Fulton County Jail, Wednesday at 11:00 a.m.

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Browning was still wearing clothes seen in video when he was arrested by Cobb County police, according to detectives.

According to her online bio, Huyhn graduated from Princeton and then from Emory Law School.

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Her family released a statement on Tuesday saying:

"We have all lost a stalwart member of the community and of our family. Trinh was blessed with grace, style, intelligence, charm and wit and she in turn shared her gifts with all those who knew her. She traveled the world and back again, but ultimately made her home in Atlanta, where she was a tireless volunteer, whether it was coaching mock trial at Grady High School or assisting with refugee relief in Georgia. She was more than an attorney and always strove to be more and to have more in life than just her resume. She loved to dance and she lived every day with passion, love and light. She always had a joke, a smile or an obscure fact to share and she will long be remembered and honored for the way that she lived and not the tragedy of her death."

Photos | Woman killed in Peachtree shooting