LOS ANGELES—Authorities announced the arrest of a mother after her three childre were found dead in their East Los Angeles home, a report said.

Fox 11 reported that Sandra Chico, 28, was arrested on suspicion of triple murder. The family identified the children as one-month-old Milan Rodrigues; Mason Rodriguez, 3 years old; and Mia Rodriguez, who was four. The children’s grandmother—and Chico’s mother-in-law—told the station that the mother was unwell.

The Los Angeles Times reported that bail was set at $2 million. Chico’s sister told the paper that she exhibited symptoms of postpartum depression in recent weeks. She said her sister adored the children.

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The paper pointed out that it was not immediately revealed how the children died, and there were no "obvious signs" of trauma.