SHENYANG, China—U.S. officials issued visas Thursday to the parents of Lu Lingzi, the Chinese student killed Monday in the Boston Marathon bombing. People in her hometown said the family was struggling with the loss of its only child.

The U.S. Embassy in Beijing issued visas to the parents of the deceased victim from Shenyang as well as to the parents of a second Chinese student injured during the bombing, an embassy spokesman said. U.S. Ambassador Gary Locke has spoken with the families to express condolences, the spokesman...