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July 19, 2007 AT 09:00 AM EDT

Mexican singer Ana Gabriel is grief-stricken. A little over a year after having lost her father, Ramón Araujo, her sister, Martha Laura, has died from colon cancer.

“Her death was so unexpected, just yesterday I spoke with her. I knew she was sick, but we didn’t think she was so ill. She even came on a trip with me to the Middle East a few months ago,” the visibly shaken artist told reporters at the Mexico City funeral home where her sister’s body was being viewed. “The last time my mother saw her was in the hospital. It seemed like she was waiting for her to say goodbye,” the 49-year-old singer added.

. Today, Thursday, Martha Laura’s body will be transferred to her hometown, Culiacán, Sinaloa, where she will be buried in the municipal mausoleum of Guamuchil.

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