Indeed, sophisticated criminals invest months in creating believable characters.

I had thought he would be quite a sophisticated criminal.

Even as the industry deploys ever more advanced technology to thwart thieves, he said, "These are very sophisticated criminals, and they've defeated every known security system."

Finally, emphasis on community policing must not signal a retreat from the prosecution of organized crime and sophisticated white-collar criminals.

Some sophisticated criminals can make their own detonation devices, but most lack the expertise.

But for that reason, he argued, sophisticated criminals or terrorists are unlikely to use the technology.

But let's face it, neither Brian nor Colin was what you would call a sophisticated criminal.

But the cleaner the area, the better it'll look and, who knows, maybe it'll attract a more sophisticated criminal.

This is being used by sophisticated organised criminals and is therefore something that, I hope, he will be taking a serious interest in.

Simes said, "Most sophisticated criminals want to challenge the authorities in some way.