Philadelphia-based cable television provider Comcast apologized and promised to find the ones responsible for the 30-second porn interruption during the Super Bowl broadcast on Sunday.

Viewers in Tucson, Arizona remained speechless as they were watching the NFL Super Bowl this past Sunday when the final moments of the broadcast were interrupted by a short piece of pornographic material. Complains started pouring in from the local customers prompting the company to start an investigation into the incident.

In a statement released Monday, Comcast said it would “aggressively pursue all leads until reaching a resolution,” adding that the company was “mortified” and “appalled” by the interruption.

“Our initial investigation suggests this was an isolated malicious act,” said Jennifer Khoury, Comcast's vice president for corporate communications.

So far, the company officials have yet to determine how the signal was interrupted, though any sort of equipment malfunction has been ruled out, spokeswoman Kelle Maslyn said.

“We did an extensive preliminary check on our technical systems, and everything appeared to be working properly when the incident occurred,” she said.

In the meantime, the U.S. Attorney's Office in Phoenix said it was looking into the interruption as well.

“We take this matter seriously,“ spokesman Wyn Hornbuckle said. “We're working with appropriate agencies to review the incident.”

The Federal Communications Commission, which is responsible for policing content on radio and television stations, said as of Monday afternoon that it wasn't aware of any formal complaints made regarding the porn clip, FCC media relations director David Fiske said.

In addition to their apology, Comcast also offered a $10 credit to all its subscribers “impacted” by the short clip showing a woman unzipping a man’s pants and revealing his genitalia.