SUGAR
May raw sugar eased by 0.2 cents, or 1.9 percent, to 12.03 cents per lb by 1417 GMT after trading as low as 12.02 cents, its weakest since early January.
The May contract, due to expire on Tuesday, traded as much as 0.4 cents below the July contract.
"May-July has weakened a lot. I guess someone doesn't want the sugar. There's rumours of some low-quality stuff out there (heading for delivery)," one dealer said, adding that buyers will return if prices fall much further.
Sugar has largely been stuck in the 12.50-13 cents trading range since the beginning of March.
Speculators reduced their net short position in raw sugar on ICE Futures US in the week to April 23 to its smallest in about eight weeks, US government data showed.
The US data suggests funds have little appetite to increase their shorts for now, with some even happy to go long, dealers said.
August white sugar fell by $4.50, or 1.3 percent, to $335.50 a tonne.
COCOA
July London cocoa rose by 18 pounds, or 1.1 percent, to 1,782 pounds a tonne after peaking at 1,788 pounds, its highest since early January. July New York cocoa rose by $28, or 1.2 percent, to $2,363 a tonne after touching $2,378, its highest in a week.
Speculators increased their net short position in ICE cocoa by 899 contracts to 28,328 contracts in the week to April 23.
Cocoa arrivals at ports in top grower Ivory Coast reached 1.841 million tonnes between Oct. 1 and April 28, exporters estimated, up about 14 percent from the same period last season.
COFFEE
July arabica coffee fell 2 cents, or 2.2 percent, to 92.10 cents per lb. The contract rose 1.3 percent last week after three straight weeks of declines.
Speculators reduced their bearish stance in ICE arabica coffee by 3,221 lots to 75,846 lots in the week to April 23. . Although prices have steadied since plunging to more than 13-year lows, a massive harvest in Brazil continues to weigh.
July robusta coffee fell $8, or 0.6 percent, to $1,402 a tonne after dropping to a more than three-year low last week.
Vietnam's coffee exports in the first four months of this year are expected to fall 13.5 percent to 629,000 tonnes. Vietnam is the world's largest robusta producer.