Loretta Lynn has postponed two shows scheduled for today and tomorrow (Sept. 5 and 6) at the Grand Rapids Casino in Onamia, Minn., due to a family medical emergency.

"Due to family health concerns, Loretta Lynn will be postponing her Grande Casino Mille Lacs shows," the casino website says.

While the 82-year-old hasn't revealed any details, her daughter, Cissie Lynn, shared on Facebook that she is undergoing surgery today (Sept. 5).

Cissie's younger sister, Peggy, also reached out to Lynn's fans, asking for support.

The 'Coal Miner's Daughter' singer also had a concert scheduled for yesterday (Sept. 4) at the Paramount Theatre in Cedar Rapids, Iowa. That show has been rescheduled for March 27, 2015. No word yet on when the remaining shows will be rescheduled.

Those with tickets for the canceled shows can return their tickets at the point of sale for a full refund or use them for the rescheduled concerts.

Lynn's next scheduled performance is at the Adler Theatre in Davenport, Iowa, on Sept. 18. Keep track of all updated concert information here.

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