PORTSMOUTH � Police are investigating an early Saturday morning shooting in a Summer Street neighborhood which, Police Chief Robert Merner said, occurred after a juvenile mistakenly went into an unlocked home thinking there was a party there.

The police chief said "multiple rounds were fired," said no one was hurt and the incident could have ended in tragedy.

The shooting occurred around 3:30 a.m. in the area of 140 Summer St., where a teenager thought there was a party based on a text message he received, the chief said. He found the door unlocked, went inside and the residents were wakened, Merner said.

According to public records, former police commissioner Brenna Cavanaugh and her partner Mark Gray reside at the home.

Merner said the teen left the home and got into a vehicle, backed up and hit a pole, at which time the homeowner "discharged a weapon, striking the vehicle."

Police officers were nearby on a motor vehicle stop on Islington Street when they heard the gunshots and began investigating as the emergency call came in, police later stated in a press release.

�The caller stated that she and her partner encountered the male parked in a vehicle on Summer St., and that her partner, armed with a pistol fired upon the vehicle as it fled from the area,� the press release said.

Merner said he was not identifying the shooter at this time and there is no danger to the community. He said there remains an active and ongoing investigation into whether charges will be filed against any of the involved parties.

Cavanaugh sent an email to media outlets Saturday night disputing the police reports about the shooting. Cavanaugh said the vehicle accelerated in reverse at her and her partner and the shots were fired in self defense.

Cavanaugh declined a request for additional comment beyond her email. Merner did not respond to calls seeking comment on Cavanaugh's statement.

Anyone with information about the incident is asked to contact Detective Peter Sheldon at (603) 610-7609.

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