Several hot pockets flared up overnight on the Seaside Boardwalk as the investigation into finding a cause of the 10-alarm blaze continues.

Rubble from the boardwalk fire in Seaide Heights (Dino Flammia, Townsquare Media NJ)

Ocean County Prosecutor's Office spokesman Al Della Fave says fire crews from Seaside Heights and Seaside Park were able to take care of the flare-ups and are normal with large fires.

Thursday's fire consumed 4 blocks and 20 buildings, destroying nearly two dozen businesses.

Della Fave also denied reports that investigators from the Prosecutor's office consider the circumstances around the blaze "suspicious."  "No one at the Ocean County Prosecutor's Office has labelled the fire suspicious.  Our only comment is that the investigation continues," he said in a statement, adding that no further information will be released until their investigation is complete.

Governor Christie warned that it will be several days before business owners can return to their burned out stores as investigators do their work.

ABC News reported on Friday that investigators are looking at a number of factors surrounding the blaze including  the fact that many firefighters were out of town for the annual New Jersey Firemen's Convention in Atlantic City. They are also considering the timing of the fire, which started in the middle of the afternoon at 2:15 p.m. on a sunny  day and that the structure got through the summer season without incident.

Smoke rises from the destroyed remains of businesses along the Seaside boardwalk (Spencer Platt/Getty Images)

“As facts unfold, then you make the determination,” Ocean County Prosecutor's Office spokesman Della Fave told The Record. “That’s on top of interviews with area business folks who were witnesses. The top two things are determining the point of origin and any related accelerants that might have caused it to spread.”

400 firefighters from all over New Jersey battled the fire. Governor Andrew Cuomo of New York and Connecticut Governor Dannel Malloy also offered assistance. President Obama on Friday says his administration will support state and local efforts to rebuild after yet another blow to New Jersey's residents and businesses.

The Associated Press contributed to this report