How to say "from somewhere" in Russian?

Откуда-то

"from somewhere" is Откуда-то in Russian.

Откуда-то means "from somewhere" in English.

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Word #3175 of 4,000 by frequency in Russian — level B2.

Example

Откуда-то сверху донёсся странный шум.

A strange noise came from somewhere above.