NEW YORK (CNNMoney) -- Violence marred Black Friday shopping in at least five states, including a California incident in which police say a woman doused fellow shoppers with pepper spray in a bid to cut to the head of the line.

The incident happened at a Walmart (WMT, Fortune 500) in the Porter Ranch area of Los Angeles, police spokesman Officer Robert Chavira said.









About 15 people were exposed to the spray. Los Angeles firefighters treated them at the scene and no one required hospitalization, Chavira said.

The woman was able to pay for her purchases and leave the store before police arrived, Chavira said.

In San Leandro, Calif., police had one man in custody and another was hospitalized following a 1:45 a.m. shooting in a Walmart parking lot.

"It was a robbery gone bad," police Sgt. Mike Sobek told reporters. "The victim's family fought with the robbers. They were able to detain one suspect. We are not sure if that suspect is the shooter, but we do have one person in custody right now."

In Myrtle Beach, S.C., police said two people suffered injuries in an apparent armed robbery attempt after they left a Walmart store around 1 a.m. Friday, CNN affiliate WMBF reported.

Would-be robbers struck a man on the head and shot a woman in the leg before another shopper displayed a gun and the assailants fled, the station said, citing Myrtle Beach Police Captain Kevin Heins. The woman was taken to a hospital for treatment, he said.

In Fayetteville, N.C., authorities said they were looking for two men after at least one of them fired shots outside a mall entrance around 2 a.m. as shoppers were gathering for holiday sales, the Cumberland County Sheriff's Office said in a statement. The men then ran inside the mall, where several more shots were fired, according to police. No injuries were reported, police said.

Police arrested a man in Kissimmee, Fla., on a resisting arrest charge after they wrestled him to the ground to stop a fight at a jewelry counter at Walmart around 1 a.m. Friday, CNN affiliate Central Florida News 13 reported.

The other man in the fight was allowed to leave the store, the station reported.

And in Rome, N.Y., a brawl broke out in the electronics department at a Walmart moments after midnight, CNN affiliate WSTM reported, citing the Oneida County Sheriff's Office. Two people were taken to the hospital for treatment of minor injuries, the station reported.