Over 30 killed in Mexico cartel stronghold as violence rages after Sinaloa leaders detained in U.S.

Eleven more people have been killed in a wave of violence in a Mexican cartel heartland shaken by gang infighting, authorities said Sunday.

The latest fatalities included five men whose bodies were found on a highway south of the city of Culiacan, the Sinaloa state prosecutor's office said in a daily update.

More than 30 people have been reported dead in a week of bloodshed in Sinaloa, although authorities did not specify how many were believed to be linked to the cartel infighting.