By Mark Gomez | mgomez@bayareanewsgroup.com | Bay Area News Group

The National Transportation Safety Board announced Tuesday it is conducting an investigation of the fatal crash Friday involving a Tesla on Highway 101 south of San Jose.

Two NTSB investigators will examine the post-crash fire and evaluate the steps taken to safely remove the vehicle from the scene, the agency announced. The NTSB said it is “unclear if automated control system was active at the time of crash.”

“We decided that we would look into it primarily to look at the control system on board to see if it was involved,” said NTSB spokesman Keith Holloway, referring to the Tesla Model X auto-pilot capability.

In a statement, a Tesla spokesperson said “We have been deeply saddened by this accident, and we have offered our full cooperation to the authorities as we work to establish the facts of the incident.”

The company’s shares fell as much as 6.3 percent midday Tuesday to the lowest intraday in almost a year. The stock and bonds are declining as analysts cast doubt on the electric-car maker reaching its production targets for the all-important Model 3 sedan.

A San Mateo man died Friday morning when his Tesla Model X crashed at the Highway 101 and Highway 85 connector, authorities said. Wei Huang, 38, was traveling in the carpool lane of southbound 101 around 9:30 a.m. that morning when he collided with the barrier separating his lane from the Highway 85 flyover carpool lane, according to the California Highway Patrol.

The impact caused Huang’s vehicle to catch fire, the CHP said. Moments later, an approaching Mazda and Audi hit the 2017 Tesla.

Huang was extricated from his vehicle by rescue crews and rushed to Stanford Hospital, where he died from his injuries that afternoon, the CHP said.

The crash site limited traffic access for several hours in part because of caution used in evaluating the Tesla’s battery, which had become exposed by the collision. Road crews were back at the site Monday to make repairs to the freeway connector.

NTSB investigations typically take 12 to 18 months to complete, Holloway said.