Identity theft detectives are investigating the use of two skimming devices found installed on gas pumps at a service station on the Long Island Expressway service road in Ronkonkoma, Suffolk County police said Tuesday morning.

Police said the incident at the Gulf gas station on Ronkonkoma Avenue and the north service road was reported at 8:17 a.m. — after being discovered by a worker servicing the machines.

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Crime Scene Unit officers were sent to the scene and located the devices, which police said were installed “internally” on two pumps.

Skimming devices are used in cybercrimes, stealing credit card and other personal information from customers.