The incident unfolded Saturday afternoon in the 100 block of West High Street in Centralia when Jesse E. Summerhill, 22, of Tacoma started a fight with another man he did not know after an argument, according to the Centralia police log.
Summerhill's mother, Tamala J. Summerhill, 53, of Tacoma was there and grabbed some pepper spray to break up the fight.
The man who had been attacked by her son then tried to flee the area, but Tamala Summerhill followed the man and kept spraying him with pepper spray, police said.
The man finally reached his vehicle, where he had two 8-year-old children.
"For unknown reasons Summerhill pepper-sprayed the two children as well," the Centralia police log says.
Both the Summerhill mother and son were arrested. The son was cited and released. The mother was booked into Lewis County Jail for investigation of felony assault. She later was released from jail.