A racist tweet posted by someone who appears to be a supporter of the Urawa Reds created a stir over the weekend, prompting the J. League soccer team to issue an apology.

"Drop dead Caio, you black man," a tweet by @urawatsubasa said, referring to Brazilian player Caio of the Kashima Antlers. The tweet was posted after the Antlers beat the Reds on Saturday but has since been deleted.

"I felt sad, and I never thought that this would ever happen to me. It was even more striking to know that my father was crying at home," Caio told reporters Sunday, saying he learned about it from his girlfriend and that his father was visiting him in Japan at the time.