Submarine journo presumed dead

A Columbia-educated journalist who vanished after boarding a submarine in Copenhagen was described by Danish authorities Thursday as “a dead person.”

Swedish-born Kim Wall (inset), 30, was last seen alive on Aug. 10 aboard the UC3 Nautilus with the submarine’s owner, Peter Madsen.

“It is our clear presumption that we are looking for a dead person,” Copenhagen’s chief investigator, Jens Moeller Jensen, said on Thursday. “We are still missing a corpse.”

Wall had been working on a feature story about Madsen when she embarked on the trip.

A day after the vessel set out, Danish authorities began searching for the 60-foot submarine, which hadn’t returned to Copenhagen as planned.

After it was found 30 miles south of the Danish capital, Madsen, 46, was rescued and the Nautilus suddenly sank.

It was refloated on Saturday, then emptied of water. When police entered on Sunday, Wall was not inside.

“The sub has been searched and there is nobody on board — neither dead nor alive,” Jensen said at the time.

Police later arrested Madsen on manslaughter charges, although he has denied any wrongdoing.

The self-described “inventrepeneur” claims he dropped Wall off on Refshaleøen island after she had completed her interview and told local media that his craft had encountered a problem with its ballast tank.