Four children from Moreno Valley were grieving this weekend over their mother’s death in the July 6 collapse of an ice cave in Washington state and holding vigil for their uncle, who lay unresponsive in a hospital bed there.

Then Monday, July 13, they received unfathomable news: Their father was shot to death late the previous night in San Bernardino.

In the span of a week, the children — two girls, ages 14, 12, and two sons, 8 and 1 — had become orphans.

“This is a nightmare,” said Rachelle Randle, a family friend.

Randle’s 12-year-old son is close friends with one of the girls and is a classmate at Landmark Middle School in Moreno Valley.

“There’s so many of (her) friends out here that are hurting,” Randle said.

San Bernardino police said the father, Adrian Martinez Cardona, 35, of Redlands, got into an argument about 10 p.m. Sunday at a bar, Lulu’s Hideout, at 1958 W. Rialto Ave. Cardona was asked to leave, and he was shot as he stood outside near his vehicle.

No one had been arrested as of Monday afternoon, Lt. Rich Lawhead said, and no other circumstances of the shooting were immediately being released.

A person who answered the phone at Cardona’s home Monday declined to talk about him. Friends of Annalisa Santana, the woman whose body was found in the ice cave, are saying little about the family at their request.

Randle said she has known the family for about two years. She didn’t know whether Santana and Cardona ever married, but they were estranged at the time of their deaths, Randle said. The children all took their father’s last name.

Santana and her children flew to Washington on June 30, where they met up with her boyfriend, Dustin Wilson. On July 6, they visited the Big Four Ice Caves, a popular – and unstable – tourist destination formed by avalanches in the Cascade Range.

Signs warn tourists that the cave can collapse. On the day Santana was killed, higher-than-normal temperatures were causing it to melt.

Besides Santana, five people were injured. Among them were Santana’s oldest child, who suffered an ankle injury, and Santana’s brother, David, who had a head injury, Randle said.

David Santana was in critical condition Monday, said Harborview Medical Center spokeswoman Susan Gregg.

Adrian Cardona Sr. had spoken with his children daily after their mother’s death, but he had been unable to go up to Washington, Randle said.

“His loved his kids,” Randle said.

Randle bristled at comments on social media that criticized Santana for entering the cave and Cardona for getting in trouble at a bar. Whatever their choices, Randle said, the children need the public’s prayers and support.

They have a large extended family to care for them, Randle said.