LOS ANGELES—Eight people, including four children, were injured in a multi-vehicle collision at a three-way intersection in the neighborhood of Sylmar on May 23 that left one of the vehicles overturned.

According to Los Angeles Fire Department spokesman Brian Humphrey, the crash occurred shortly before 3 p.m. in the 14900 block of West Hubbard Street. At least four vehicles were involved in the crash.

“Though seatbelts were used, some of the children were improperly restrained,” Mr. Humphrey said in a statement, adding that there were no child car seats being used, and least two of the children were sharing one seatbelt.

“Thankfully, none of the passengers were ejected from the vehicle(s),” Mr. Humphrey said.

Two adults were taken to hospitals in serious condition. Four children between the ages of 6 and 12 were hospitalized with minor injuries, he said. Two other people declined to be taken to hospitals for treatment.

The cause of the crash remained under investigation.