The Mexican army has seized $15.3 million in cash believed to belong to members of the Sinaloa drug cartel.

Army spokesman Gen. Ricardo Trevilla says soldiers found the money inside a car in a downtown neighborhood of the border city of Tijuana.

Trevilla said Tuesday no arrests were made and did not say what led troops to the cash.

Trevilla says it was the second largest cache of cash found by soldiers. The biggest was in September 2008, when troops seized $26.2 million at a house in Culiacan, capital of the Pacific coast state of Sinaloa.

The country's biggest cash seizure was in March 2007, when federal police seized $207 million in Mexico City linked to a ring selling pseudoephedrine, the main ingredient in methamphetamine.