A U.N. report says it has been almost three years since Somali pirates successfully hijacked a large commercial vessel but they retain the capacity and intent to resume the attacks and have lately shifted to targeting smaller foreign fishing boats.

The report, seen by The Associated Press on Wednesday, says that as of August 2016 there were no seafarers from large commercial vessels held by Somali pirates but 39 hostages from foreign fishing boats remained in captivity.

The report also found that while reported piracy incidents increased slightly to 15 in the roughly year long period that ended in October 2016, up from 12 in the previous period, the numbers were sharply lower than the 237 pirate attacks reported when piracy was at its peak in 2011.