They seen a company had the same name (he didn't have a website) and bought it. They said because it had a popular "key word", which is the loop hole they use to get away with it. This way they can say its not their intentions even though it is. Then they used a shell company to send him emails to try to get his company to buy it where they "the register" is not connected. No other company on all of the inernet is named the same as his (very unique name) which makes it 100% clear they targeted them.
I have something similar happen to me, when I started the trademark process for a company that I founded. Within a week after filing, I was contacted by several "representatives" for obscure TLDs primarily in Asia, who informed me that someone had tried to register $companyname.asia and other TLDs. Being the rightful owner, I was allowed to supersede that registration. For a fee, of course. The initial mail was:
We are the department of Asian Domain Registration Service in China. I have something to confirm with you. We formally received an application on April 11, 2014 that a company which self-styled "Paest Investment Co. Ltd". were applying to register some Asian countries top-level domain names.
Now we are handling this registration, and after our initial checking, we found the name were similar to your company's, so we need to check with you whether your company has authorized that company to register these names. If you authorized this, we will finish the registration at once. If you did not authorize, please let us know within 7 workdays, so that we will handle this issue better.