The correct answer is: A. detach.
To attach something means to take possession of it by law. In this case, the government is taking possession of the assets of the scam suspects. This is because the suspects have been accused of a crime, and the government has the right to seize their assets as part of the criminal investigation.
The other options are incorrect because they do not accurately describe the action that the government is taking. Option B, donate, means to give something away for free. Option C, return, means to give something back to the person who owns it. Option D, release, means to set someone free.
In this case, the government is not giving away the assets of the scam suspects, nor is it returning them to the suspects. The government is seizing the assets as part of the criminal investigation.