NY Attack - Taliban Connection?

A gunman, reportedly an immigrant from Vietnam, took hostages and opened fire in a U.S. immigration center in New York yesterday. 13 people were killed. The man later killed himself.

After the incident, Pakistani Taliban militant leader Baituallah Mehsud claimed credit for the attack. Reuters reports:

"Pakistani Taliban militant leader Baituallah Mehsud claimed on Saturday responsibility for an attack on a U.S. immigration center in New York state in which 13 people were killed.

"'I accept responsibility. They were my men. I gave them orders in reaction to U.S. drone attacks,' Mehsud told by telephone from an undisclosed location.

Reports claim the FBI have ruled out the Taliban's responsibility in the attack and a Fox Pakistani security analyst "dismissed Mehsud's claim as a publicity stunt."

What do you think?