At least 16 people were killed on Thursday morning in a road accident between a passenger bus and two tractor trailers near km 39 of the Sonoyta-San Luis Rio Colorado highway in the northern Mexican state of Sonora, the Attorney General’s Office of Sonora said, according to Xinhua.

In addition, at least 22 people were injured, with six in serious condition, the Sonora office said in a Twitter message.

According to National Guard reports, the accident occurred at about 5:00 a.m. local time and the incident had “the support of emergency service personnel.”

The bus, operated by bus line Expreso Interbus, collided with a tractor trailer parked on the side of the road and then was hit head-on by another tractor trailer that was traveling in the opposite lane, according to local press accounts.

Sonora’s health secretary Enrique Clausen Iberri described the accident as “regrettable,” adding that the Red Cross coordinated the transportation and care of the injured people.

Source: Azerbaijan State News Agency