PITTSFIELD — The first shooting took place about 12:20 p.m. Saturday.

Witnesses told police they saw a black male wearing dark clothing get out of the passenger seat of a red Honda Pilot and start shooting toward houses on Canal Street before getting back in the car, which headed south on Wahconah Street.

Moments later, shots were fired on upper North Street, this time at another vehicle.

The driver and passenger of the vehicle told police they were being tailgated by a red Honda Pilot. When the driver pulled over to allow the Honda to pass, witnesses said, a black male hanging out the passenger window fired several rounds toward their car, which was hit several times.

New details of the pair of weekend shootings were revealed Monday in court documents during the arraignment of the woman who was driving the Honda. No one was injured in the shootings, but police recovered multiple shell casings at both locations, and at least one bullet was found near the first incident.

Police spoke to a witness who said they saw a maroon-colored SUV speeding on Roxbury Street and saw two black males exit and run into the woods, wearing clothing that matched the description given by witnesses of the Wahconah Street incident.

A vehicle also matching the description was spotted and pulled over on Yarmouth Street. Inside, officers spotted a 9 mm shell casing on the floor of the front passenger side and two cellphones on the passenger seat.

The driver, Alexandra Mitchell, 21, told police neither phone was hers, nor did she know to whom they belonged. She was placed under arrest.

Meanwhile, a 17-year-old male was found by police in the area of Broadway Street and Roxbury Avenue, and was identified by a witness as one of the men who came out of the SUV. He also was arrested.

A background check showed Mitchell had no FID card; the juvenile is too young to obtain one.

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Altogether, police found 13 shell casings, all fired by a 9 mm Luger, leading police to believe both shootings were committed by the same person or persons.

The juvenile is being charged with armed assault with intent to murder, discharge of a firearm within 500 feet of a dwelling, and possession of ammunition without a firearms identification card.

His name was not released because of his age. Information on the status of his case was unavailable Monday.

Mitchell pleaded not guilty in Central Berkshire District Court on Monday to one count of possession of ammunition without a firearms identification card.

Judge Robert Santaniello released her on her own recognizance and set a pretrial hearing for May 7.

Police have said the investigation is ongoing and additional charges may be coming.

Anyone who has information about the shootings is asked to contact the Pittsfield police detective bureau at 413-448-9705.

Bob Dunn can be reached at bdunn@berkshireeagle.com, at @BobDunn413 on Twitter and 413-496-6249.