Deputies say 52-year-old Albert Benjamin Simon barged into the party at a home in the 16500 block of Obsidian Drive near the Houston National Golf Club around 8:30 p.m. on Christmas Eve.
The party wasn't just to celebrate Christmas, the woman who was killed was also celebrating her birthday.
The Sheriff's Office says Simon, her ex-boyfriend, pushed his way inside, grabbed her, and shot her several times.
Investigators found a handgun in the yard, but believe Simon is still armed and dangerous. The Sheriff's Office says Simon left the scene in a dark colored Jeep Cherokee.
A murder warrant has been issued for Simon. He has a mugshot on file with the Harris County Sheriff's Office for a prior offense.
"This morning we began with a tragedy, the death of a 3-month-old, and today we're closing the evening of Christmas Eve with another tragedy," Sheriff Ed Gonzales said Tuesday night.
Authorities identified the victim as 46-year-old Carolee Dawn Taylor. She died at the scene.
They say about 15 people were at the home when she was shot and killed.
"We want the public to be safe. If he's watching, we want him to do the right thing and just turn himself in so that we can get this matter resolved," Gonzalez said.
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