By Al Novack

PHILADELPHIA (CBS) — Two suspects remain at large following an overnight robbery of the Embassy Suites Hotel along Bartram Avenue near the Philadelphia International Airport.

Investigators say the heist occurred just after 2 a.m. Tuesday. Authorities say the suspect tied up a hotel employee and a guest. One of two masked gunmen forced a hotel employee to open a safe.

Police say the suspects fled with approximately $400 and remain at large. No one was hurt.

Police have not identified any suspects, but they are interviewing several people who witnessed the incident.