By Richard Winton and Matthew Ormseth From Los Angeles Times LOS ANGELES—The mother of three children found dead in an East Los Angeles home has been arrested on suspicion of murder and is being held in lieu of $2 million, Los Angeles County sheriff’s officials said Tuesday. Sandra Chico, 28, was taken into custody as a “person of interest” after deputies found her children unresponsive in the home Monday afternoon. She was booked at 11 p.m., records show. She is being held at the Central Regional Detention Facility in Lynwood. Chico is due in court on Wednesday, the Sheriff’s Department said. Deputies responded about 12:45 p.m. to Chico’s home in the 600 block of Ferris Avenue and found the children—two boys and a girl, all younger than 3—unresponsive and not breathing, sheriff’s Lt. Charles Calderaro said. Chico was inside the home when deputies arrived. He said there was another person in the …