Emergency personnel and firefighting equipment from across New Jersey were rushed to the Ocean Grove section of Neptune on Saturday in response to a five-alarm fire that has left the North End Pavilion in ruins just 40 days before Memorial Day weekend.

Here’s what we know as of early Sunday morning:

What exactly caught fire?

A commercial building located on the northern tip of the Ocean Grove boardwalk that housed the Dunes Boardwalk Cafe, as well as several gift shops and beach apparel stores including Jones Treasure Grove, Maxie’s Tops & Tees, A Promised Land and Bettie’s Bombshells.

Is anyone hurt?

No one has been reported injured at this time.

How bad is it?

Millions of dollars in damage. The building itself appears to have been all but obliterated.

The fire was first reported around 11:30 a.m. Saturday and an army of firefighters from around the state were still working to extinguish the blaze by midnight, more than 12 hours later.

A significant portion of the structure, including the roof, has collapsed; what is still standing appears to be have been destroyed by fire, smoke and water damage.

Is there a threat that the fire could spread to other structures?

The fire itself is located at the north end of the boardwalk, east of an empty lot that has long been subject to redevelopment discussions.

Unlike the devastating 2017 fire that spread rapidly due to the nature of Ocean Grove’s iconic 19th century architecture — wooden homes that are packed tightly together — there were no structures in close proximity to the pavilion. Indeed, this time, the fire posed a greater threat to neighboring Asbury Park.

How so?

The pavilion is (or rather, was) located on Neptune’s municipal boundary with Asbury Park and connects to the city’s boardwalk there.

Indeed, the fire is about 100 feet from the historic Asbury Park Steam Plant, which was built in 1930 to provide heat to that city’s boardwalk attractions. However, most of that structure is made of brick.

Beyond that, within 200 feet, lies two other city landmarks, the Asbury Park Casino and Carousel Building. To protect exposure to those structures, firefighters could be seen Saturday afternoon hosing those buildings down as a precaution.

I thought I could smell smoke on Saturday. Could that have been from the fire in Ocean Grove?

If you were in certain parts of coastal Monmouth County on Saturday, yes. With a wind speed of about 12 mph, a thick plume of gray smoke could be seen for miles billowing north into the sky over Asbury Park.

Air quality issues were reported as far north as Highlands and a smoky haze permeated much of Ocean Grove and Asbury Park.

Get a bird's-eye view of the Ocean Grove fire via our drone footage in the video above or in the photo gallery below.

How did the fire start?

It’s not known at this point. Officials at the scene said the fire started underneath the Dunes Boardwalk Cafe, a seasonal restaurant that was closed at the time.

More:Ocean Grove fire breaks out at Dunes Boardwalk Cafe: 'The whole thing is going to go'

More:Ocean Grove fire: Drone view of Dunes Boardwalk Cafe fire scene

More:Ocean Grove fire: See how the fire progressed

For complete coverage of the fire in Ocean Grove, stay with app.com for the latest updates throughout the day and click here to read Saturday’s coverage of the blaze.