European shares extended losses on Friday after banking stocks turned lower and energy stocks retreated as crude CLc1 prices slipped.

By 1148 GMT, the pan-European FTSEurofirst 300 .FTEU3 index of top shares was down 0.6 percent at 1,004.51 points in a choppy session, having been up as much as 1,016.51 earlier.

Banks were the worst performers on the index. UBS (UBSN.VX), Societe Generale (SOGN.PA) and Barclays (BARC.L) fell 1.7 to 2.3 percent.