No further details are available, according to the team.
The Penguins take a 14-game winning streak into their home game against the New York Islanders on Saturday afternoon. There is no word whether Iginla will play, though it might be unlikely because he has not skated or practiced with his new team. If he doesn't play Saturday, the Penguins have two days off before facing the Buffalo Sabres on Tuesday.
Pittsburgh acquired Iginla from the Calgary Flames in a trade completed early Thursday morning.
“Immigration issues are not an uncommon thing when having to get a visa,” after a player is traded from a Canadian team to a U.S.-based club, Penguins coach Dan Bylsma said Friday.
Iginla, a Canadian citizen, needs a work visa to play for the Penguins.