A spacewalk outside the International Space Station was suspended Tuesday when the astronaut's spacesuit helmet had a water leak, Vladimir Soloviov, head of the Russian segment of the orbital research center, said.

"The decision was taken to suspend the spacewalk when European astronaut Luca Parmitano was having a water leak in his helmet," Soloviov told the Interfax news agency.

The "water leak" occurred when Parmitano and NASA astronaut Chris Cassidy were doing reparation and maintenance jobs outside the ISS.

"When that happened, the U.S. segment took the decision to get the astronauts back on board urgently," Anna Vedisheva, spokeswoman for the Russian space agency Roscosmos, said.

As a result, the astronauts could only complete 92 minutes of a planned six hours of extravehicular activity and were unable to finish their work.

For now, NASA specialists have not been able to determine the origin of the problem, since the space suit has several systems that require liquid to function.

Technicians are weighing the possibility that the liquid came from a bag of water that astronauts drink during their spacewalks.

The six occupants of the ISS are currently trying to resolve the problem by their own means, according to NASA.

Parmitano, who arrived at the ISS at the end of May on a Russian Soyuz rocket, undertook his first spacewalk activity last week together with Cassidy.

Since the U.S. retired its space shuttles, Russian Soyuz rockets have been the only means of transporting astronauts between Earth and the ISS. EFE