KANSAS CITY, Mo. — Two people are dead in a Northland apartment fire that officials are investigating as suspicious.

According to some witnesses at the scene, they heard a large boom, followed by smoke detectors going off.

Fire crews arrived quickly and began fighting the fire at the three story apartment building at the Vivion Oaks Apartments.

According to KCFD spokesman Jason Spreitzer, fire investigators said the burn pattern from the first floor to the third floor and how quickly the fire spread makes it look like the fire was set on purpose.

“We as a fire department, we thrive to be able to get people out,” Spreitzer said. “I can tell you that conditions upon arrival were unsurvivable.”

However, the Kansas City Police Department’s bomb and arson unit, along with the ATF, has joined the investigation to determine the exact cause of the fire. KCPD later said investigators have so far only deemed this fire as suspicious.

” It was a fireball,” said Spreitzer. “To hear veterans of 20 plus years speak on the conditions of it like that they did everything that they could to be able to help and get all of the other residents out.”

Officials have not released any identifying information on the two victims.

Anyone with information regarding the fire is urged to call the TIPS Hotline at 816-474-TIPS.