An Indigenous woman has died while being held in custody at the Brisbane watch house.

Police say the 49-year-old woman had been remanded in custody on Monday, after appearing in the Magistrates Court on drug and theft charges.

She had been awaiting a transfer to a correctional facility, but was found dead in her cell this morning.

Police from the Ethical Standards Command are investigating.

In a statement, the Queensland Police Service said cultural support was being provided by Murri Watch, whose representatives visited the watch house on Thursday morning.

• Related: No charges over death of Yorta Yorta woman Tanya Day

-ABC