Meanwhile, questions are being raised about the ability of law enforcement authorities to thwart the attacks.
Questions are also being raised about the hospital's handling of the hoax call.
Questions are already being raised about the legality, even constitutionality, of the government's methods.
There are still questions being raised about the security of that system.
The study is published as questions are being raised about the effectiveness of new technology in classroom settings.
But while many tourists and locals were intrigued, questions were soon being raised about the ethics of the project.
Despite its success in raising funds, questions are being raised about the viability of Musk's hyperloop concept.
To be sure, questions are also being raised about the risks of unleashing materials of infinitesimal size and unknown properties.
Questions are now being raised about the thoroughness of auditors, advisers and the HP board itself in scrutinising the company.
Despite the promise of mobile money, concerns are being raised about the safety of mobile banking systems.
Now questions are being raised about the way the immensely rich new leader, Yukio Hatoyama, has used his political finances to help the party.
