It's primate versus primate in New Delhi's metro system.

In an effort to keep monkeys out of the Indian capital's subways, authorities have called in one of the few animals known to scare the creatures — a fierce-looking primate called the langur, the Hindustan Times newspaper reported Wednesday.

The decision to hire a langurwallah — a man who trains and controls the langurs — came after a monkey got into a metro car in June, the newspaper reported.

The langur handler is being paid a retainer of $160 a month, and "he will be called whenever there is a monkey problem," Anuj Dayal, the spokesman for the Delhi Metro Rail Corp., was quoted as saying.

On June 9, a monkey reportedly crawled through some pipes and ended up aboard a train, scowling at passengers and jumping around a car.

Passengers had to be moved to another car while staff chased the dexterous creature, causing delays.

The langur handler was being employed to prevent more such problems.

"There are too many monkeys," Dayal told the paper.