In a few hours, 22-year-old Parchuri Swathi would have come home to a warm welcome. Swathi's homecoming after four months was eagerly awaited since it was the first visit after Swathi landed a job at TCS Bangalore in January this year. But she walked into a death trap when a bomb exploded in the S4 compartment of Guwahati Express minutes after the train chugged into Chennai Central station on Thursday morning. Swathi was the only casualty in the explosion. Her parents, Parchuri Ramakrishna and Kamakshi have rushed to Chennai. Swathi has a sibling, Pradyumna, who is now pursuing engineering course at IIT, Mumbai.``My granddaughter is a precious child who excelled in her studies,’’ said Swathi's grandparents.

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