ATLACOMULCO, Mexico (AP) — The freight train’s horn rang out shortly before it cleaved in two a double-decker bus carrying domestic and construction workers to Mexico’s capital on Monday morning, leaving at least 10 dead , more than 50 injured and sending families to hospitals to search for answers.

Minutes earlier Isabel Segundo, 38, was chatting by phone with her 17-year-old daughter Yoana Segundo, who was aboard the bus. Like thousands of others, Yoana is a domestic worker and was commuting to her job as the sun rose over throngs of workers doing the same early Monday.

“I was terrified when I saw news of the accident. I thought my daughter had died,” Segundo said. “We were calling and calling, and all I got was voicemail.”

Late Monday, Segundo said she was relieved to hear her daught

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