Amid the happy news that Beyonce and Jay Z welcomed their real-life Gemini twins earlier this week, rumored to be a boy and a girl, some worrisome claims have surfaced.

TMZ reports that an "issue surfaced that has kept them in the hospital for nearly a week."

Unnamed sourced told the tabloid that the twins were born Monday, June 12, in a Los Angeles hospital, but that as a result of a "minor issue," doctors "do not feel comfortable releasing them."

There's no word yet on what the "minor issue" may be, but TMZ shares that both Beyonce and the babies are "expected to be okay."

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