The allegations were contained in a letter to the Standing Committee on Public Accounts, which is probing irregularities in the contract.
The images contradict claims from the office of President Ian Khama that the military is not carrying out construction on his private holiday home.
The tracking of prominent politicians and businesspeople appear to show that the Gupta business network operated like a fully-fledged spy agency.
Emails show that one of the family’s lieutenants composed tweets for broadcast by fabricated Twitter accounts.
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