L.A. deputies shoot pit bull to death to stop 'vicious' dog attack

What has been confirmed

Only one source so far — nothing has been independently corroborated yet.

What remains unknown

• Reported by one source, not yet independently confirmed: Deputies with the Los Angeles County Sheriff’s Department shot a vicious pit bull to death as it was attacking a man at a Lancaster home Monday, authorities said.
• Reported by one source, not yet independently confirmed: Deputies were called to a dog attack on the 43200 block of 20th Street West at 9:53 a.m.
• Reported by one source, not yet independently confirmed: The attack was still happening when deputies arrived.