A "peculiar" signal has been detected from a star just 11 light years away from Earth - with odd "almost periodic" bursts of radio waves.
He told Business Insider: "The SETI [Search for Extraterrestrial Intelligence] groups are aware of the signals".
The signal is coming from a red dwarf star known as Ross 128 which is 2,800 times dimmer than the sun and is not known to have any planet around it, adding more to the mystery.
The researchers are guesstimating that this discovery may point towards the first proof of existence of alien life.
University of Puerto Rico astrobiologist Abel Mendez said that the star was observed for 10 minutes using the Arecibo Observatory - a massive radio telescope in a sink hole in Puerto Rico.
Dividend Diamond in Focus: Honda Motor Co., Ltd. (NYSE:HMC)
The Southern Company (NYSE:SO) share price increased in the last trading session with a previous 52-week high of $54.64. Boyd Watterson Asset Management LLC OH raised its stake in shares of Ford Motor Company by 0.5% in the second quarter.
As such, official alien hunters have been notified.
"The field of view of (Arecibo) is wide enough, so there is the possibility that the signals were caused not by the star but another object in the line of sight. Some communication satellites transmit in the frequencies we observed", he said according to Express.
Reporting his findings in a personal blog post, Professor Méndez said "we have never seen satellites emit bursts like that" and noted that the signals "very peculiar'".
A senior astronomer at SETI Institute named Seth Shostak explained that they were well aware of the signals and they wish to use California's powerful Allen Telescope Array to examine them.
"Therefore, we have a mystery here and the three main explanations are as good as any at this moment", the professor said.
Professor Mendez says his team will observe the star again this month.