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The call came in just after dark on Tuesday — a masked man with a gun was robbing a T-Mobile store in Queens, holding two employees in a back room.

Within minutes, the first police officers arrived, and two officers and a sergeant ran inside, officials said. More officers pulled up outside, and still more. The man in the store advanced quickly toward the officers inside, pistol raised. They retreated out of the store.

Then everything went wrong.

Seven officers opened fire toward the store — a total of 42 shots within 11 seconds, the police said. “It goes from zero to 60,” said Chief Terence Monahan, the Police Department’s highest-ranking uniformed officer.

When the barrage of gunfire ended, two men lay bleeding on the sidewalk outside the store.

Neither was the robber.