Two people were in custody following a confrontation with San Diego police in the Grant Hill neighborhood Friday.
An officer responding to a report of a person breaking windows and acting erratically arrived to the corner of 30th and Market just before 2 p.m.
The officer got into a fight with the suspect and called for backup.
Bystanders stepped in to help the officer. A K-9 unit also arrived.
Two people were taken into custody. One person was injured with a dog bite, police said.
No other information was immediately available.
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