MENLO PARK (KRON) — A crash in Menlo Park Monday morning injured three people and knocked down a 70-foot tree, California Highway Patrol officers said.

The collision was reported at around 3:19 a.m. on southbound Highway 101 at the Willow Road off-ramp.

A silver minivan swerved into the grass to the right side of the off-ramp, CHP officers said.

CHP officers issued a Sig-alert at 3:48 a.m. when they closed the southbound transition from Highway 101 to Willow Road while firefighters cleared the tree.

All lanes were reopened just before 4:30 a.m, CHP officers said.

The extent of the injuries are unknown at this time.