UPDATED Tuesday, Jan. 16: Semi hit SUV before plunging off I-84 into Columbia River, authorities say

A semi-truck veered off Interstate 84 Monday night and plunged into the Columbia River about a mile east of Corbett.

According to emergency dispatch records, the incident occurred around 5:18 p.m., near the Tunnel Point exit.

The truck smashed through the guardrail, fell down an embankment and landed partially in the water, according to a news release from the Multnomah County Sheriff's Office.

Corbett Fire has just responded to a semi vs car on I84 near MP 23.

The semi went over the embankment into the Columbia River. pic.twitter.com/TwDrZSaOvM — Corbett Fire (@Corbett_Fire) January 16, 2018

The driver was helped from the truck by a passerby.

According to the Corbett Fire Department, a car was also involved in the crash. Two of its occupants, as well as the semi driver, have been transported to the hospital, the department said.

The crash is under investigation, and police did not provide additional details.

-- Anna Marum