AMMAN, Jordan — The Jordanian police on Wednesday questioned two Syrians who were detained the day before and accused of trying to smuggle antitank missiles, surface-to-air missiles and assault rifles into Jordan, according to a security official.

The announcement came a week after the authorities said they had arrested another group of smugglers, including Syrians, trying to bring in arms. They said that group was caught with the largest arms cache to be brought into the kingdom from Syria in more than two years of civil war there.

The official said no motive had been determined in the latest case.

“There is an investigation now to determine if the two men were rebels seeking to hide weapons in Jordan, or that they smuggled them in with the malicious intention of staging attacks here,” the official said.

His account was confirmed by another security official; both spoke on the condition of anonymity to discuss a security matter under investigation.