TOKYO ( TheStreet) -- Japan's Prime Minister Naoto Kan said Friday he would take "decisive action" when necessary regarding the strengthening yen.

"Excessive movement in the currency market is bad for the economy and financial markets ... I will take decisive action when necessary," Kan told reporters in Tokyo, the Wall Street Journal reports.

Kan, the Journal reports, also applied further pressure on the Bank of Japan to loosen its monetary policy, saying he would meet with BOJ Gov. Shirakawa as soon as Shirakawa returns from his U.S. trip.

The yen hit a 15-year high vs. the dollar earlier this week.

The dollar was slightly higher Friday, rising 0.3% to 84.745 yen from Thursday.

-- Written by Joseph Woelfel

>To contact the writer of this article, click here: Joseph Woelfel .

>To submit a news tip, send an email to: tips@thestreet.com.

More from Currencies

Bitcoin Today: Prices Slip as Broader Crypto Market Struggles to Make Traction

Bitcoin Today: Prices Slip as Broader Crypto Market Struggles to Make Traction

Bitcoin Today: Prices Attempt to Recover From One-Month Lows

Bitcoin Today: Prices Attempt to Recover From One-Month Lows

Cryptocurrency Regulation Is a Must for Long-Term Sustainability, Expert Says

Cryptocurrency Regulation Is a Must for Long-Term Sustainability, Expert Says

These Small Cap Experts Explain Why Crypto Isn't Going Anywhere

These Small Cap Experts Explain Why Crypto Isn't Going Anywhere

Bitcoin Today: Prices Sink to One-Month Low as Bid to $10,000 Falters

Bitcoin Today: Prices Sink to One-Month Low as Bid to $10,000 Falters