UPDATE: One Child Killed, One Hospitalized in Hwy 85 Crash; All Lanes Now Open

All lanes of northbound state Highway 85 in Cupertino have reopened tonight after one person -- a child between 7 and 10 years old -- was killed in a crash this afternoon, according to the California Highway Patrol.

Another child, possibly a relative, although that was not confirmed, sustained injuries and was taken to a hospital, CHP said.

The CHP said both children were in one vehicle and had the same last name. The age of the injured child was not known. 

Some media reports stated there were two fatalities, which the CHP confirmed this evening was inaccurate information. 

The crash was reported at about 3:30 p.m. on northbound Highway 85 at De Anza Boulevard, CHP officials said.

At least two vehicles collided there -- initially reported to be a Jeep and a minivan -- and two vehicles overturned, according to the CHP.

The one child was pronounced dead at the scene of the crash, CHP officials said.

All lanes of northbound Highway 85 remained closed while authorities investigated the crash.

Motorists were diverted off of the highway at De Anza Boulevard until about 7:15 p.m., when all lanes reopened, according to the CHP.

The cause of the collision remains under investigation.

--Bay City News contributed to this report.