The police and FBI investigation found no evidence of jihadist motivations in this case. Contrary to the New York Post report and some of the right wing blogosphere, video of the incident (which I've listened to) does not clearly record anyone shouting "allhu akbar" (the shouts sounded to me more like "come on out" by the responding police officers). None of the officers on scene near the suspect reported any such utterances by the suspect.

The FBI report can be found here.