Two suspects have been arrested in the slaying of a Virginia man who was shot to death in downtown Oakland after being robbed of $17, police said.

George Hugguins, 24, of Oakland was arrested Monday afternoon on suspicion of robbing Jinghong Kang, 45, and then fatally shooting him, police spokeswoman Holly Joshi said.

A surveillance video showed Hugguins and his girlfriend, Althea Housley of Oakland, walking together on the 1900 block of Webster Street just minutes before the July 18 killing, police said. A tipster recognized Housley, 33, who was arrested Saturday on Curtis Street in West Oakland on suspicion of murder and robbery. On Monday, a citizen recognized Hugguins in the same block and held him until police arrived, authorities said.

Kang, a father of three sons from Fairfax, Va., had gotten his teeth cleaned earlier in the evening and had returned to his rental car with a dental hygienist when he was shot, police said. His dental appointment was in advance of a job interview that had been scheduled for the next day at Google in Mountain View, police said.

Hugguins demanded money and pulled the trigger after Kang handed over $17, police said. The hygienist was not hurt.

Police also believe Housley and Hugguins robbed a couple June 21 on the 1700 block of Telegraph Avenue, police said. The male victim was shot in that incident, Joshi said.

Police and Kang's widow, Wendy Wang, thanked citizens for providing the tips that led to the arrests.

"The information received from the community was crucial in the arrest of these two suspects," Joshi said.

Wang said she hoped the arrests could result in "at least some justice. I hope they could be prosecuted and get what they deserve."

Wang said her husband would have wanted the suspects to "repent to the Lord since he was such a faithful Christian." He also would have wanted his wife to forgive them, but "it's really hard for me to do this. I don't know, but maybe someday," she said.