"It's a thin market and people are getting very jittery about the possibility of SNB intervention ," a London-based trader said.The Swiss National Bank declined to comment on the move, as did the Bank for International Settlements,

In thin pre-holiday liquidity, the euro spun to its lowest against the dollar since early September, picking up pace after breaking strong support at $1.4500 and hitting stop-loss sell orders to take it below the $1.4400 mark.

The rupee today depreciated by 10 paise to 46.63 a dollar in opening trade on fears that capital inflows would be impacted adversely after the Reserve Bank tightened the guidelines for external commercial borrowings.

The Indian rupee nudged higher on Wednesday as traders unwound long dollar positions, with the U.S. unit easing against majors.

The Indian rupee appreciated by 22 paise in early trade today on expectations of fresh capital inflows by capital funds as stock market may open higher, tracking firming trends on other Asian equity markets.