Mexican authorities say drug cartel assassins who killed three film students dissolved a total of twelve people in acid.

Interior Secretary Alfonso Navarrete said Thursday that investigators had found DNA from 12 separate people in residual fats found in tanks where one of the killers confessed to having dissolved bodies.

Navarrete did not say whether any of the DNA profiles matched those of the three film students abducted March 19 on the outskirts of the western city of Guadalajara.

The three were working on a film project for school at a house that was apparently being watched by members of the Jalisco New Generation cartel. One suspect said the cartel abducted the students, killed them and dissolved their bodies.

The house had once been used by a rival drug gang.The Daily Star's FREE newsletter is spectacular! Sign up today for the best stories straight to your inbox Sign up today! Thank you for subscribing See our privacy notice Invalid Email

The middle-aged man, described as "well-to-do", walked calmly into the branch in Andover, Hants, and started leaving non-monetary deposits on the floor from the bottom og his shorts in front of horrified customers.

One eyewitness said the man looked "calm but angry" as he made his mess in the bank.

He apparently even walked up and down the stairs in a deliberate attempt to make as much mess as possible.

Garreth (Corr) McCarthy, 27, revealed: "I was just queuing up, there were about a dozen customers there, and this guy walked in.

"He looked pretty well to do. He was a middle-aged