Pro Al-Shabab demonstrators flying an Islamic State (ISIS) flag attend a protest against the burning of the Koran, the Islamic holy book, at southern Mogadishu's main stadium, Sept. 15, 2010. REUTERS

The Islamic State group has reportedly killed a Somali intelligence officer in the a neighborhood of the capital city, Mogadishu, according to a new report Monday. A local journalist tweeted that the spy's killing took place in the city's Yaqshid district, citing the Amaq News Agency, which is a propaganda media outlet for the global terror group more commonly known as ISIS.

While the reports were not immediately confirmed, they hinted that ISIS may very well still be in Somalia, where the militant group hasn't been heard from since early last month. Somalia and the greater East African region has been the target of a separate terror group: the al Qaeda-affiliated al-Shabab, which has been wreaking bloody havoc mainly in Somalia and neighboring Kenya in an effort to instill what it says is traditional Islamic law and shun the Western governments supporting those nations.

Read: ISIS Captures Somalia Town

The signature black flag of ISIS was seen being raised in Somalia in late October after it took over the strategic coastal town of Qandala in late October, CBS News reported.

"This is a symbolic victory because this is the first major town that ISIS has captured in Somalia," an expert on Somalia told CBS News at the time.

Some al-Shabab fighters have defected and joined ISIS, and there was bad blood between the two terror groups which were seemingly pushing for the same political ideals.

"The Shabab decided to kill anyone suspected of supporting ISIS," a former member of al-Shabab told the New York Times in October as he spoke of multiple "assassinations" of ISIS militants. "The fighting between them is a struggle over power, not principle."

Read: ISIS Claims Its First Attack In Somalia

ISIS would go on to claim responsibility for a deadly attack on a hotel in Somalia last month, Reuters reported. Four guards were killed in that instance as ISIS and al-Shabab both laid claims to the carnage.

The move into Somalia continued ISIS progression into North Africa, which began early last year.