The NHL is investigating Fox Sports Net Pittsburgh for not sending all available camera angles to league headquarters in Toronto for Simon Gagne's apparent goal that was under review against the Penguins last Thursday, league spokesman Gary Meagher confirmed to the Daily News.

FSN Pittsburgh, who had the game's only video feed, sent all of the camera angles of the replay except the one that clearly showed the puck over the goal line.

Comcast SportsNet elected to not use their own video feed during the game, one CSN employee said on Monday. CSN would have been able to send their own replays to the NHL's War Room in Toronto if they had used their own feed.

"Hockey Operations did not have a definitive replay that showed the puck in the net - and weren't aware that one existed - until after they made their ruling," said John Dellapina, another NHL spokesman. "Once the puck dropped, their ruling became permanent."

Video of the angle in question is shown below.

It is not yet clear whether FSN Pittsburgh purposely excluded the angle or it was an unintentional oversight, though one Penguins announcer can be heard saying "we saved that one" on the broadcast.

A message left for FSN Pittsburgh after business hours on Monday has not yet been returned.

The play was ruled no-goal by officials for "inconclusive evidence."

The non-goal, which wound up not impacting the 7-4 final score, would have given the Flyers a 6-3 lead heading into the second intermission. Coincidentally, the game was the second most watched Penguins regular season telecast ever.

The NHL has given no indication as to length of the investigation or what penalties may come of it.

Said Meagher: "It's a matter between the League, the Penguins and FSN that will be handled internally."