The impact tore a hole in the warship’s port side at the waterline, flooding compartments that included a crew sleeping area.
U.S. Pacific Fleet Commander, Adm. Scott Swift said an international search-and-rescue operation had found some remains and that the wider search for 10 sailors missing from the accident would continue until all hope was exhausted.
“The divers were able to locate some remains in those sealed compartments during their search,” Swift told reporters at Singapore’s Changi Naval Base where the USS John S McCain is docked for damage assessment.
“Additionally, the Malaysian authorities have reported that they have located potential remains. They are working to confirm and identify those remains.”
He did not specify how many remains had been found.
The Malaysian navy said in a statement it had found a body eight nautical miles northwest of the collision site and it would transfer it to the U.S. Navy on Wednesday.
Swift also said Monday’s collision, the fourth major accident in the U.S. Pacific fleet this year, could not be viewed in isolation from other incidents and that investigations were seeking to find a “common cause at the root of these events”.
The John S. McCain’s sister ship, the Fitzgerald, almost sank off the coast of Japan after colliding with a Philippine container ship on June 17.
The bodies of seven U.S. sailors were found in a flooded berthing area after that collision.
The latest accident has already prompted a fleet-wide investigation and plans for temporary halts in operations.
U.S. Vice President Mike Pence said to have sailors killed in two collisions this year was disconcerting.
“It’s just unacceptable and we’ll get to the bottom of it,” Pence told Fox News.
“But right now our hearts are with the families of those that are lost and we honor them.”
Ships, aircraft and divers from an international search-and-rescue operation have been looking for the missing U.S. sailors to the east of Singapore and peninsula Malaysia, near where the accident happened.
Aircraft from the amphibious assault ship the USS America, which was in port at Changi Naval Base, joined the search.
Earlier on Tuesday, divers equipped with surface-supplied air rigs got into compartments in damaged parts of the USS John S McCain.
Immediate efforts by the ship’s crew after the collision on Monday were able to halt flooding into other parts of the hull, the Seventh Fleet said in a statement on its website.
CNN, citing unidentified U.S. Navy officials, said early indications suggested the collision was caused by a steering malfunction as the warship approached the Strait of Malacca.
Swift said it was too early to draw conclusions about the cause and whether it was the result of human error.
Aircraft and vessels from Singapore, Malaysia and Indonesia have been helping with the search.