A woman who was eight months pregnant died after a man shot multiple times into a car she was in while stopped at an intersection in central Seattle, authorities said.

The 34-year-old woman's baby was delivered at a hospital and but died soon after, The Seattle Times reported Wednesday, citing a probable cause statement.

A 37-year-old man who was in the car with the woman was wounded in the arm and remained hospitalized.

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A 34-year-old pregnant woman died at traffic stop after a man approached a vehicle and opened fire in the Belltown neighborhood of Seattle, Washington.

The motivation for the Tuesday morning shooting in the Belltown neighborhood was unclear.

A man approached the car, fired at the driver's side with a handgun and ran away, the statement said. Video from the neighborhood showed no previous interaction with the victims.

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A 30-year-old man who matched witnesses' description was located by police soon after. Approached by officers, he raised his arms and said, "I did it, I did it," according to police.

Police said he told investigators he saw a firearm in the vehicle and reacted by firing.

He was taken into custody, and a judge found probable cause to hold him on investigation of homicide, assault and unlawful possession of a firearm, according to a spokesperson for prosecutors. He had not yet been charged as of Wednesday.