666 alarm pepper spray

A woman who pepper-sprayed other shoppers Thursday night at the Wal-Mart in Porter Ranch had armed herself with the caustic spray to gain an advantage in the fight for merchandise at the Black Friday sale, a fire captain said.

The woman, who is still being sought, used the spray in more than one area of the Wal-Mart "to gain preferred access to a variety of locations in the store," said Los Angeles Fire Capt. James Carson.

"She was competitive shopping," he said.

Twenty customers, including children, were hurt in the 10:10 p.m. incident. Shoppers complained of minor skin and eye irritation and sore throats, he said.