Srinagar, April 21 -- A US national and his companion, who were detained at Srinagar International Airport on Sunday after a GPS device was recovered from one of the luggages, have been released after nothing was found suspicious, police said on Monday.

However, the police have retained the device for further analysis.

"They have been allowed to go and return (to Delhi). There was nothing suspicious to hold them back," said incharge of police post Humhama, Mohammad Adil.

"The issue has been closed with 'nothing to report'," he said.

The two were questioned by airport security on Sunday and later handed over to the police for further investigation.

Officials said that the US national is from Montana while his companion is originally f...