VAN NUYS ( — Authorities say a father and an infant sustained severe burn injuries Sunday morning following a fire at a home in Van Nuys.

Firefighters arrived at the home in the 14300 block of Kittridge Street about 11 a.m. and extinguished the blaze in 16 minutes, according to Brian Humphrey, a spokesperson with the Los Angeles Fire Department.

Humphrey indicated via Twitter that four people were hurt.

Of those, two sustained severe burns while two others, described as a mother and toddler, were in fair condition with minor burn injuries.

Humphrey said there was “no immediate evidence of [a] functional smoke alarm in [the] residence,” according to a tweet.

The cause of the fire and a damage estimate were not immediately available.