Route 287 North in Edison was severely backed up Wednesday afternoon after an accident involving three trucks and two cars, State Police said.

The crash was first reported shortly after 4 p.m., and three lanes of the highway were closed during much of the response. State Police said at 5:30 they had just reopened all but one lane, but traffic remained a serious issue.

Police weren't yet able to say what caused the accident or if anyone was hurt.

Louis C. Hochman is digital managing editor for Reach him at or on Twitter @LouisCHochman.