Superior Court spokesman Allan Parachini reveals Federline and his lawyer are scheduled to appear at a Los Angeles courthouse for an emergency hearing, but refuses to divulge details of the meeting.
Parachini says, "Our best information is he will be here; she (Spears) won't. But anything is possible."
The former couple have two sons together, five-month-old Jayden James and 17-month-old Sean Preston.
Federline filed papers seeking spousal support and sole custody of the children after Spears announced the end of their two-year marriage last November. A temporary court order issued earlier this month granted the pair joint custody until the end of February.
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