A woman allegedly “going after vehicles with a knife” caused major traffic delays on Highway 101 in San Jose on Saturday morning, according to the California Highway Patrol.

CHP said it received a call around 11:10 a.m. regarding a woman walking near Highway 101, just south of Bernal Road. Authorities said the initial report indicated she was walking from the right-hand shoulder toward the center divide and was later reported on the southbound side, walking northbound in the southbound lanes.

At 11:13 a.m., CHP said the woman was reportedly “going after vehicles with a knife.”

Images of the scene show a severe backup caused by the incident. Drivers can also be observed exiting their vehicles.

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CHP said lanes 1 and 2 were open on southbound 101, just south of Highway 85, at 11:43 a.m.

CHP has not released any information about what happened to the woman.