* TSX down 55.67 points, or 0.38 percent, at 14,448
* Eight of the TSX's 10 main groups lower
OTTAWA, Sept 16 (Reuters) - Canada's main stock index weakened on Friday as lower oil prices dragged down energy shares, while the bank sector sagged as part of a global selloff after recent strong gains.
Investors dumped shares of banks in North America and Europe after the U.S. Department of Justice told Deutsche Bank DBKGn.DE to pay $14 billion to settle an investigation into its selling of mortgage-backed securities, a far bigger bill than expected. Bay Street, the financials group .SPTTFS slipped 0.7 percent, with Royal Bank of Canada RY.TO off 0.9 percent at C$80.63.
While trading in bank shares in Canada has been choppy in the past week, the sector rose in the past two sessions, including a 1 percent gain on Thursday. Banks are up nearly 11 percent so far this year.
At 10:56 a.m. EDT (1456 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was down 55.67 points, or 0.38 percent, at 14,448. Eight of the index's 10 main groups were in negative territory.
For the week, the index was down 0.6 percent, on track for its fourth negative week in five.
The energy group also weighed on the index, losing 0.5 percent as U.S. crude oil CLc1 prices were down 1.1 percent at $43.41 a barrel on concerns that the global supply glut would persist. O/R
Shares of Suncor Energy SU.TO fell 0.5 percent to C$34.28.
Declining issues outnumbered advancers on the TSX by 148 to 82, for a 1.80-to-1 ratio on the downside. The index was posting no new 52-week highs and 2 new lows.