A Pakistani mother driving her baby in the country’s northern Punjab province has been arrested after her husband said he was “saddened” by her death, police said Monday.

The mother of two was driving her young son, now 4, on a road in the village of Firdaus, northwest of the city of Quetta, on Sunday when she hit a truck and then collided with it, police in the provincial capital, Quetta said.

The truck driver, identified as Farooq Farooqui, 45, of Doda village in Quetta’s Balochistan district, was taken to a local hospital for treatment and is in stable condition.

The accident happened about an hour after the woman, whose identity was not released, was reported missing by her husband, police added.

Authorities are investigating the cause of the crash, which occurred near a school and a market, the police added in a statement.

The family of the mother is from the impoverished northern tribal region of Sindh, where the country has been rocked by sectarian violence.

Pakistani President Asif Ali Zardari condemned the “cowardly” incident in a written statement.

Pakistan is on high alert for possible terrorist attacks after a string of high-profile attacks in the capital and in the tribal regions in recent months.

The deadly attack on an army base in December killed at least 30 soldiers and wounded more than 80 others.

A Taliban suicide bomber killed the then-premier Nawaz Sharif in a botched assassination attempt.

The Taliban later claimed responsibility for the attack.