"It involves another investigation. And until that plays itself out, my hands are tied with Ms. Hale."
Q1. What does the underlined part mean? "I'm so busy that I can't deal with other cases except for Ms. Hale case."? or " I 'm so busy that I can't deal with Ms. Hale case."?
Q2. "My hands are tied with something" and "I'm tied up with something"? are the same meaning?
Hale
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This is an idiom meaning the speaker is unable to do anything or take any action concerning Ms. Hale. Their freedom to act is restricted or prevented by the ongoing investigation. They lack the authority, information, or ability to proceed.