North American stock markets fell Monday, deepening losses sustained in a global market downturn that started last week, as investors remained bearish after a sustained bull market run.

The S&P/TSX composite index fell by 152.02, or 1.18%, to 12,711.25.

All 10 TSX indices moved lower.

The energy sector gave up 1.18%. Light, sweet crude for April delivery lost $1.57, or 2.6%, to finish at US$60.07 a barrel.

Connacher Oil & Gas Ltd. lost 11¢, or 2.96%, to $3.60.

The materials index fell 2.64%, while the gold sub-sector fell 1.98%.

Bullion futures lost $4.90 to US$639.20 an ounce.

Novagold Resources Inc. fell 23¢, or 1.20%, to $19.00.

The information technology sector lost 1.82%.

Research in Motion Inc. announced a $250 million earnings restatement related to mistakes made in granting stock and options. It also announced Jim Balsillie would step down as chairman, while remaining co-CEO. RIM shares fell $1.43, or 0.89%, to $158.62.

The S&P TSX Venture Exchange lost 111.37, or 3.63%, to 2,995.39.

In New York, markets ended down, after spending part of the trading session in positive territory, as investors couldn’t shake off concerns over both the domestic and global economies.

The Dow Jones industrial average lost 63.69, or 0.53%, to 12,050.41, the Nasdaq composite index fell 27.32, or 1.15%, to 2,340.68, and the S&P500 index lost 13.05, or 0.94%, to 1,374.12.