MOSCOW, June 13 (Reuters) - The rouble fell to a near

three-week low against the dollar on the interbank market on

Thursday, albeit amid very low liquidity in pre-market trading,

after new U.S. sanctions on Russia forced the Moscow Exchange to

halt dollar and euro trading.

The dollar's previous close, on the eve of Wednesday's

national holiday, was 89.10 to the dollar.

On the interbank market, it reached as low as 91.4955

as some banks took speculative positions ahead of the official

launch of bids at 0650 GMT.