It was dummy EVM that AAP used to demonstrate tampering
The Election Commission of India has said that after initial doubts of an EVM theft, it has been found that the EVM used in the Delhi assembly was a dummy. The AAP decided to use a dummy EVM in the assembly to demonstrate EVM tampering to avoid any sort of legal complications.
Earlier ECI officials had said that they would check to see how the EVM was procured. The EVMs are stored in a go-down of the Election Commission of India are used only during the elections.