Authorities in Indonesia have detained a Malaysian vessel carrying 30 tonnes of ammonium nitrate, which police suspect may have been intended for use in making bombs, reports say.
Crew from the unidentified vessel are being questioned by customs officials and police in Bali, according to Reuters.
The authorities are investigating whether the cargo was bound for the island of Sulawesi, a region known for militant violence.
“At the moment the crew are being intensively examined on explosive material ammonium nitrate that was carried, shipped from Malaysia,” Bali customs official Thomas Aquino told Reuters.
“They confessed that the boat was rented to be shipped to Sulawesi. They thought the material in the sacks was fertiliser. We will detain the ship crew to be processed legally.”
In January, terrorists loyal to the so-called Islamic State attacked the Jakarta with gunfire and a bomb, killing four people.
Security was tightened in Bali last month after a suspected militant plot on the island was reported.