In this video frame grab image taken from Milenio TV via APTN, police look at the scene where a gas tank truck exploded outside a maternity and children's hospital in Mexico City on Thursday. AP hide caption

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AP

A vehicle is seen near the remains of a fertilizer plant burning after an explosion in West, Texas, near Waco. The explosion ripped through the fertilizer plant late Wednesday. Mike Stone/Reuters /Landov hide caption

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Mike Stone/Reuters /Landov