Palm oil company IOI Corporation on Friday said it would assist with any investigation after the US Customs and Border Protection (CBP) said it was probing the company over allegations of forced labour.

Migrant rights activist Andy Hall told Reuters he had petitioned the CBP over concerns of forced labour indications in IOI's operations, as alleged by the workers.

The concerns relate to the payment of deposits by workers, reimbursement of workers' recruitment fees, and...