article_snippet.sent: The Kenyan government says Mohamed Mohamud is the mastermind of Thursday's terrorist attack on Garissa University College.
article_snippet.sent: the country's Interior Ministry singled out Mohamud, a senior leader of Al-Shabaab, on Twitter.
article_snippet.sent: Mohamed Mohamud is "credited with having an extensive terrorist network within Kenya," according to a Kenyan ministry document given to CNN.
article_snippet.sent: The country's Interior Ministry posted a "most wanted" notice for Mohamed Mohamud.
article_snippet.sent: Mohamed Mohamud is in charge of external operations against Kenya, a Kenyan ministry document given to CNN says, and Mohamed Mohamud is the regional commander within Al-Shabaab in charge of the Juba region.
article_snippet.sent: In this role, Mohamed Mohamud commands the militia along the border and "is responsible for cross-border incursions in the country.
article_snippet.sent: Mohamed Mohamud position as one of Al-Shabaab's top field commanders in southern Somalia has brought Al-Shabaab's into direct conflict with Kenyan troops deployed as part of African Union forces in the country.
article_snippet.sent: This is a man who has a lot of grudges against the Kenyans," said Hansen.
article_snippet.sent: But Hansen noted that Mohamud is better known "for tactical military attacks rather than terrorist attacks.
article_snippet.sent: Mohamud has claimed responsibility for several attacks in the past few years, including December's attack on a quarry in a Kenyan village near the Somali border, which killed at least 36 people.
article_snippet.sent: Mohamud is Kenyan and has three wives and three siblings, including two with links to Al-Shabaab, the document says.
article_snippet.sent: Mohamud's from a clan, the Ogaden, that has a heavy presence in Kenya and Somalia, Hansen said.
highlights_snippet.sent: Al-Shabaab's Mohamed Mohamud "has a lot of grudges against the Kenyans," expert says .