Indian Navy's elite Marine Commandos have recovered a Mauritian national's identity card from the rucksack of a terrorist, who escaped from the Taj hotel room, after an encounter with the security forces.

"We have recovered a rucksack of a terrorist, who escaped, after an encounter with the MARCOS and we found an identity card of a Mauritian national," Marine commandos team leader, who was part of the operation, told reporters in Mumbai on Friday.

The rucksack also contained Chinese made grenades, seven ammunition magazines, 400 spare rounds of ammunition, seven credit cards of different banks, dry rations, and $1,200 and Rs 6,840.

The recovered items were later handed over to the Mumbai police, the team leader said.

Indicating that the terrorists had done a recce of the targeted landmarks before their attack, the MARCOS leader said it was because of their knowledge of the building that the terrorists could escape from the hotel room after the encounter.

He said they had noticed only three to four terrorists, who were probably operating from different floors, as they were very well versed with the outlay of the Taj hotel, where they were holed up for most part of the 40-hour operation.

"Terrorists were hurling grenades and firing from different floors and we could not see them because of the darkness. But they were operating with ease," he said.