Thomson Reuters Ariana Grande returned to the United States on Tuesday, one day after a suicide bomber killed 22 people at the pop singer's concert in Manchester, England, People magazine reported, as questions lingered over whether she would continue her European tour. Grande, 23, was photographed landing at an airport in her hometown of Boca Raton, Florida, and being met by family members, the magazine said. The pop star has not been seen publicly since an explosion ripped through the packed Manchester Arena at the end of her performance there.