Hours after the shooting, a motorist 50 miles north of Detroit spotted a vehicle described on radio reports and notified authorities, touching off a 30-mile pursuit that passed through a construction zone and reached speeds of 120 mph, officials said.
Anthony LaCalamita III, 38, said nothing after officers surrounded him, Genesee County Sheriff Robert J. Pickell said. Officers found a 12-gauge pump-action shotgun and three live shells in the vehicle, but LaCalamita as "subdued. Very, very, very subdued," the sheriff said.
LaCalamita's calmness at the conclusion belied a frantic mid-morning at the offices of Gordon Advisors, a 40- to 50-employee company where workers had been busy preparing tax returns.
"We heard pop, pop, pop," smelled gunpowder and heard co-workers yelling, said Jean Larson, 48, a staff accountant for G&C, a subsidiary of Gordon Advisors.
"I heard one employee screaming, `He's got a gun. He's got a gun.' ... It was a panic. No one knew what to do. No one knew where to go."
"My employees saw a guy with a shotgun running down the hall and then we called the police department," one witness told CBS station WWJ.
After briefly assembling in the employee lunchroom, some employees opted to hole up inside individual offices. Larson joined two female co-workers, barricading the locked door with chairs, turning off the lights and silencing their cell phones.
Beneath a desk, the three curled up and kept quiet.
"I was just so scared," Larson said. "I just kept thinking, `This can't be happening."'
Police said the person killed was a 63-year-old woman from Warren but would not name her. A message posted Monday afternoon on the accounting firm's Web site said the office would be closed Tuesday in memory of Madeline Kafoury.
Larson said Kafoury was well-known and well-liked. She said Kafoury retired last year following the conclusion of tax season, but returned part-time this year after her successor quit.
Troy Police Lt. Gerry Scherlinck identified the other victims as a 47-year-old man and a 48-year-old man.
The families of the wounded men requested privacy, and Beaumont Hospital would not release any details about their conditions, hospital spokeswoman Ilene Wolfe said.
"I'm not positive all three of the people were targeted but there appeared to be some purpose," Troy Police Chief Charles Craft said.
LaCalamita was being held on charges of fleeing and eluding police and was expected to be charged Tuesday in the shooting.
LaCalamita was fired last week, Craft said, but still was listed on the Web site of Gordon Advisors. Calls made to Gordon were not answered, and a recording said the offices were closed.