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Five members of a Garden Grove family, including a mother holding her twin babies, were victimized by a home invasion robbery and police were looking for four assailants on Friday.

Responding to a burglary call in the 11500 block of West Street (map) about 11 a.m. Friday, officers found a 29-year-old woman with a gunshot wound to her neck inside a home.

The woman was holding her 15-month-old twin girls, according to police.

Two adult family members, a 30-year-old woman and a 70-year-old male, were found with their hands zip-tied behind their backs.

The woman who had been shot and the twins were taken to UCI Medical Center. The mother was in critical condition but was expected to survive, according to a news release from the Garden Grove Police Department.

The two children were uninjured, police Lt. Ben Stauffer said. The news release included a typo that had initially left the status of the girl unclear.

“The babies were OK. They did have some blood on them. We took them to the hospital just to make sure, to get them cleaned up, so they could later be released to the dad,” said police Lt. Ed Leiva.

Investigators on scene said they were not certain if the woman had been shot while holding her daughters or if she had picked the girls up after being struck.

Police were looking for four males, who had been wearing dark clothing, gloves and ski masks. They each had revolvers, but no further description was available.

It was not known if anything was stolen, nor what the motive was.

The assailants were last seen driving southbound on West Street in a white SUV-type vehicle, according to police.

A witness at the scene said “three black guys” were seen going into the home from a white van that was driven by a “white man.”

“I thought it was kind of strange … He didn’t knock; he walked straight in,” the witness said.

The van pulled up and one man walked right into the house without knocking, while other went around to the back of the home, the witness said.

“It happened quickly,” Leiva said. “It sounds like they went in there with a purpose, and they were out quickly.”

Another witness described a similar scene — two suspicious men looking into the home after leaving a white van — that occurred a day earlier. They left quickly, the neighbor said.

Multiple patrol cars and officers were on scene at the home, which was cordoned off by yellow police tape, video from the location showed.

KTLA’s Chip Yost contributed to this article.