Determine if the sentence is true based on the text below:
The bomb threats were made over the telephone.

July 28 (Reuters) - Seven Walmart stores in Missouri were evacuated after receiving bomb threats but no explosives were found, a Walmart spokesman said on Saturday. The threats were called in late on Friday to stores in Raytown, Gladstone, Jefferson City, Nixa, St. Peters and Ozark, spokesman Dan Fogleman said. The retailer is working with police to find those responsible, Fogleman said. No explosives were found and no injuries were reported.
Yes