A man was killed and at least 16 people were taken to the hospital after a man drove an SUV into an Apple store in a shopping plaza in Hingham, Massachusetts, on Monday, police said. Several others were also injured.

“This morning was an unthinkable morning,” Plymouth County District Attorney Tim Cruz said in a press conference, adding, “This investigation is active and ongoing. We are very limited as to what we can say at this point.”

The man was driving a 2019 Toyota 4Runner and “crashed” through the front glass of the store, according to Cruz. It’s unknown how fast the SUV was going when it crashed into the store, Cruz said.

Police started receiving 911 calls regarding a vehicle inside a building at the Derby Street Shops around 10:45 a.m., Hingham Police Chief David Jones said.

Emergency responders found people injured outside and inside of the store, including a few that were “pinned against the wall by the vehicle,” Fire Chief Steve Murphy said.

First-responders, co-workers and bystanders gave first aid to multiple victims, according to Cruz. Seven fire engines and 14 ambulances responded to the scene, Murphy said.

First responders took 16 people to three hospitals, Cruz said. But even more people later went to the hospital, patient totals from the hospitals suggest.

The emergency department at South Shore Hospital received 16 patients from the scene with “various acute and less acute traumatic injuries,” and another later walked in, spokesperson Kristen Perfetuo said. Brigham and Women’s Hospital treated two people, spokesperson Jessica Pastore said. And Boston Medical Center admitted three patients, spokesperson David Kibbe said.

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