Reports of renewed conflict in Ukraine wipe out US stock market gain

Reports of renewed fighting in Ukraine are sending stocks lower in midday trading.

Major U.S. indexes are still headed for a solid gain for the week.

Stocks opened higher but turned lower in mid-morning trading Friday following reports that Ukrainian soldiers attacked a Russian military convoy that had entered the country.

Bond prices rose as investors sought safety, driving the yield on the 10-year Treasury note down to 2.32 percent, its lowest level this year.

The Dow Jones industrial average was down 78 points, or 0.5 percent, to 16,635 as of noon Eastern time. It was up 61 points earlier.

The Standard & Poor's 500 fell seven points, or 0.4 percent, to 1,947. The Nasdaq lost seven points, or 0.2 percent, to 4,445.