Nassau police are searching for two masked men with guns who robbed a Plainview Citibank Monday morning.

Robbery Squad detectives said the men entered the Citibank branch at 100 Sunnyside Blvd. at 11:17 a.m. and, after announcing they were committing a robbery, ordered a teller to put money into a red drawstring bag.

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One man was described by police as 5 feet, 10 inches tall, 160 pounds and wearing a dark hooded jacket, a black mask or scarf, gloves and carrying a silver automatic handgun. He walked behind the counter and handed the teller the bag and told her to fill it up, police said.

She complied and inserted an undisclosed amount of money.

The other robber was described as 5 feet, 10 inches to 6 feet tall and wearing a dark hooded sweatshirt, mask, black gloves and carrying a black automatic handgun. He stood in the customer area as his partner demanded money from the teller, police said.

The men fled in an unknown direction, police said, adding that there were five bank employees and three customers in the branch during the heist. No one was injured.

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Detectives ask anyone with information about the incident to call Nassau County Crime Stoppers at 800-244-TIPS. All callers will remain anonymous.