A police manhunt is underway in New York City after the head of one of the nation’s largest health insurers was fatally shot this morning in Midtown Manhattan. The police described the killing as a targeted attack. Here’s what we know.

The executive, Brian Thompson of UnitedHealthcare, was shot just after 6:45 a.m. near the New York Hilton Midtown, where his company was holding its annual investor presentations. The surrounding blocks are a popular holiday destination for tourists and shoppers.

Surveillance video obtained by The New York Times shows a gunman in a dark hooded jacket walking up behind Thompson and firing at him at least three times. Police said the attacker had waited for Thompson, ignoring other passers-by, before shooting him in the back and leg. Thompson collapsed on the sidewalk against a wall before the gunman fled on an electric Citi Bike into Central Park.

For more: Thompson, 50, managed a division that employs about 140,000 people. He had recently received several threats, though that is not unusual for health insurance executives.