St. Paul police are looking for a man who prosecutors say tried to kill his pregnant girlfriend by slashing her throat.

Steven Michael Gutierrez, 30, was charged Wednesday with attempted murder and first-degree assault. The charges were filed by warrant; he remains at large.

According to court documents, Gutierrez critically wounded his girlfriend of two years, a 24-year-old St. Paul woman, during an argument outside the home they shared in the 1600 block of Charles Avenue on July 31.

The woman’s brother told police the two had been arguing earlier in the evening. Gutierrez seemed drunk, he said.

Around 9 p.m., Gutierrez said he was leaving and started to put his belongings in his van, the charges said.

At one point, Gutierrez grabbed a plastic bag containing the cremated remains of the woman’s pet rabbit and dumped it onto the floor, the charges said. He then drove away.

The woman said he returned about an hour later. He seemed calm, led her out back and said he wanted to talk, she told police.

Her brother told Gutierrez to leave her alone. Gutierrez suddenly attacked her, tackling her to the ground, the charges said. She felt a tug at her neck.

At first she thought Gutierrez had scratched her with his fingernails. Then she realized blood was “pouring” from her neck, according to the charges.

Gutierrez ran off. Her brother called 911 and got a towel to try to stop the bleeding. The woman got inside and lay down on the kitchen floor.

“She said she thought she was going to die,” the charges said.

The woman, who is 12 weeks pregnant with Gutierrez’s child and also has a 4-year-old son, suffered a deep cut about 5 inches long from the front of her neck to the back. Paramedics said they found her “in a pool of blood, still responsive” but “pale and peripherally shut down,” according to the charges.

She remained hospitalized Wednesday after life-saving surgery.

No weapons were recovered from the scene. The woman said she’d seen a new package of razor blades in Gutierrez’ work van and thought he may have used one to cut her.

Photos of the scene showed blood smeared on the back sidewalk, up the steps and in the kitchen, court documents said. Dried flowers, including roses, lie next to drops of blood in the grass.

Marino Eccher can be reached at 651-228-5421. Follow him at twitter.com/marinoeccher.