At least eight people are dead after gunmen opened fire in a bar in a drug-plagued city on the Mexico-Texas border.

Arturo Sandoval is an official with the state of Chihuahua, where Ciudad Juarez is located. He says that three others remain hospitalized after the attack about 2 a.m. Monday that killed seven men and one woman at a bar.

Ciudad Juarez is one of Mexico's deadliest cities with more than 1,300 killings so far this year. The government has sent thousands of soldiers to crack down on drug cartels, which have responded with unprecedented violence.

Many of the killings are the result of battles between rival drug smugglers for lucrative routes into the United States.