Albert Simon made a sudden move toward a bag when a deputy shot Simon, according to a tweet from Gonzalez.
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Simon was taken to a hospital, where he was pronounced dead, according to Gonzalez.
WATCH: Harris County Sheriff Ed Gonzalez explains how Al Simon was confronted at Hermann Park
Sheriff's update on the end of Al Simon manhunt
Simon, 52, was wanted for the murder of his ex-girlfriend, Carolee Taylor on Christmas Eve. He had not been seen since that night.
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Simon left the shooting scene in a dark colored Jeep Cherokee. A murder warrant had been issued for him related to Taylor's death.
Witness describes what he saw as deputies converged on Hermann Park
Witness describes scene as deputies confront Al Simon
What we know about shooting suspect in Christmas Eve killing
Investigators believed Simon had a gun and considered him dangerous.
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SEE ALSO: Woman had fight with ex-boyfriend days before Christmas Eve shooting: Friend
She was well-known in social circles and served on committees for the Houston Livestock Show and Rodeo, according to Taylor's friends.
RELATED: Woman killed on Christmas Eve remembered as selfless
ORIGINAL STORY: Search for accused shooter continues after Christmas Eve killing
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