The euro edged down as Asian investors reacted to overnight news of attacks in Brussels. Attacks on Brussels airport and a rush-hour metro train in the Belgian capital, which occurred late in Tuesday's Asian session, killed dozens and triggered security alerts across western Europe.

The yen fell as Japan officially selected Makoto Sakurai, a supporter of negative interest rates, as a new Bank of Japan board member Wednesday, a move likely to tip the balance of opinion on the board more in favor of Gov. Haruhiko Kuroda. The upper house of Japan's parliament approved Sakurai to take the post, following a similar decision in the lower house the previous day.

EUR / USD: during the Asian session, the pair was trading in the $ 1.1200-25

GBP / USD: during the Asian session the pair fell to $ 1.4180

USD / JPY: during the Asian session, the pair was trading in range Y112.10-45

Based on Reuters materials