"The decision to suspend the walk, as European astronaut Luca appeared Parmitano water in diving," said Solovyov told Interfax.
The "fluid leakage" occurred when Parmitano and NASA astronaut Chris Cassidy performing repair and maintenance tasks outside the orbital outpost.
"After that the U.S. took the decision on the urgent return of the astronauts aboard the ISS," said Anna Vedisheva, spokesman for the Russian space agency Roscosmos.
For this reason, Italian and American, who left the station at 11:56 GMT, met only 1 hour and 32 minutes of extravehicular activity and could not complete its work.
"Parmitano and Cassidy are fine. Just over an hour after departure, Parmitano reported water ingress from the back of his helmet," NASA said in a statement.
For now, NASA specialists have failed to pinpoint the source of the problem, since the diving includes various fluid systems that need to function.
Technicians are considering the possibility that the liquid proceed drinking water bottle to drink the astronauts during walks.
"Luca told us in the previous walk had fluid in the diving, but only slightly," said a spokesman at NASA's Mission Control Center Russian Space.
According to the testimony of Italian, spent 33 minutes between fluid was detected in his spacesuit and the time your peers on the ISS took off the helmet.
"NASA engineers believe that if the problem is only with the water, the next hike could take place next week. But it is still early to talk about it," added NASA's representative in Russia.
The six occupants of the International Space Station right now trying to solve the problem on their own, according to NASA.
The spokesman for the European Space Agency (ESA), Rene Pichel said that the two astronauts will not outside the platform to clarify the reasons for the escape of liquid.
Pichel explained that the ERA should have several spare space suits for spacewalks, although he added that now, "before dressing (the astronaut), we must understand the causes of what happened."
The ESA official said that this is the first time in history that a spacewalk is suspended by the liquid inlet in one of the suits.
Parmitano, who came to the orbital outpost to late May aboard a Russian Soyuz spacecraft, conducted last week its first extravehicular activity with Cassidy.
At 36 years, the ESA astronaut is the youngest person to be part of a long-term expedition on the ISS.
At present, besides the two mentioned, working on the ISS Russian cosmonauts Pavel Vinogradov, Alexander Misurkin and Fyodor Yurchijin, plus the U.S. Karen Nyberg.
Since the withdrawal of the functioning of the U.S. shuttle, the Russian Soyuz spacecraft are the only means of transporting astronauts between Earth and the ISS.