The former governor of New York, David A. Paterson, and his stepson were injured in an assault on a Manhattan street on Friday evening, the Police Department said.

Mr. Paterson, 70, and his stepson, Anthony Sliwa, 20, were walking in the Upper East Side at about 8:30 p.m. when they were attacked after a verbal altercation with five people, according to the police.

Mr. Paterson suffered minor injuries to his face and body, while Mr. Sliwa received minor injuries to his face, the police said. Both were taken to NewYork-Presbyterian Hospital/Weill Cornell Medical Center in stable condition.

A spokesman for the Police Department said the former governor was not believed to have been targeted in the assault.

The former governor and Mr. Sliwa had been on a walk near their home when they encountered the five people, Sean Darcy, a spokesman for Mr. Paterson, said in a statement on Friday night. Mr. Sliwa had had “a previous interaction” with the five people, Mr. Darcy added, though details of that interaction were not immediately clear.

Mr. Sliwa is the son of Curtis Sliwa, a former Republican mayoral candidate and the founder of the Guardian Angels, an anti-crime group.

Mr. Paterson and his stepson were sent home from the hospital early on Saturday, Mr. Darcy said. They had been taken to the hospital as a precaution, he said, after “both suffered some injuries but were able to fight off their attackers.”

They filed a police report, he said.

“The governor’s only request is that people refrain from attempting to use an unfortunate act of violence for their own personal or political gain,” Mr. Darcy said on Saturday, adding that Mr. Paterson and his wife, Mary Alexander Paterson, were thankful for “the outpouring of support they have received from people across all spectrums.”

Mr. Paterson, the 55th governor of New York and the first Black person to hold the office, served from 2008 to 2010.

He rose to the position during a tumultuous time: His predecessor, Eliot Spitzer, resigned in 2008 after being linked to a high-end prostitution ring. Mr. Paterson, then the lieutenant governor, took over after Mr. Spitzer resigned.

Mr. Paterson, a Democrat who served for two decades in the State Senate, weathered his own scandals and a state budget ravaged by recession. He did not seek re-election after completing his term as governor.