*

TSX down 0.8%

*

GFL Environmental ( GFL ) touches three-month high

(Updated at 10:05 a.m. ET)

By Shubham Batra

June 4 (Reuters) - Canada's main stock index fell to a

one-month low on Tuesday on losses in materials and energy

shares as copper and oil prices fell, while investors awaited

the Bank of Canada's interest rate decision on June 5.

At 10:05 a.m. ET (14:05 GMT), the Toronto Stock Exchange's

S&P/TSX composite index was down 185.97 points, or

0.84%, at 21,930.72.

A fall in commodity prices weighed heavily on the benchmark

index. Energy shares led the losses with a 2.8%

decline as oil prices dipped more than $1 on doubts about an

OPEC+ decision to boost supply later this year.

Materials index, which houses Canada's precious

and base metal miners and fertilizer companies, dropped 3.7% to

a near four-week low as gold and copper prices retreated. The

index was on track for its worst day in four months.

Gold fell 1% as the dollar firmed, while copper prices

dipped below the key mark of $10,000 a metric ton for the first

time in three weeks as consolidation continued due to lackluster

demand in top consumer China.

Investors are awaiting Canada's monetary policy decision

due on Wednesday, where the BoC is expected to cut rates to

4.75%, a Reuters poll of economists showed.

"While inflation may be hotter than expected, other parts of

the economy are starting to slow, with rising unemployment and

cooling GDP," said Christian Lawrence and Molly Schwartz,

RaboResearch's cross-asset macro startegists, in a note.

"We forecast the policy rate to be 4.25% by the end of

2024."

The yield of the Canadian benchmark 10-year bond

was hovering at a two-month low and was last at 3.456%.

In company news, GFL Environmental ( GFL ) rose 3.7% to

touch a three-month high after clocking healthy gains in the

previous session.

In the United States, the S&P 500 inched lower after

the latest labor market data, as investors remained concerned

about slowing economic activity, while also raising expectations

for an earlier start to interest-rate cuts.