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Police: Masked gunmen attack university in eastern Kenya

  • Students of the Garissa University College get out of a house where they were taking shelter from an attack by gunmen in Garissa, Kenya, Thursday, April 2, 2015. Gunmen attacked the university early Thursday, shooting indiscriminately in campus hostels. Police and military surrounded the buildings and were trying to secure the area in eastern Kenya, police officer Musa Yego said. (AP Photo)

    Students of the Garissa University College get out of a house where they were taking shelter from an attack by gunmen in Garissa, Kenya, Thursday, April 2, 2015. Gunmen attacked the university early Thursday, shooting indiscriminately in campus hostels. Police and military surrounded the buildings and were trying to secure the area in eastern Kenya, police officer Musa Yego said. (AP Photo)  (The Associated Press)

  • Kenyan police officers take cover outside the Garissa University College during an attack by gunmen in Garissa, Kenya, Thursday, April 2, 2015. Gunmen attacked the university early Thursday, shooting indiscriminately in campus hostels. Police and military surrounded the buildings and were trying to secure the area in eastern Kenya, police officer Musa Yego said. (AP Photo)

    Kenyan police officers take cover outside the Garissa University College during an attack by gunmen in Garissa, Kenya, Thursday, April 2, 2015. Gunmen attacked the university early Thursday, shooting indiscriminately in campus hostels. Police and military surrounded the buildings and were trying to secure the area in eastern Kenya, police officer Musa Yego said. (AP Photo)  (The Associated Press)

  • Some students without their shirts of the Garissa University College get out of a house where they seek refuge after escaping from an attack by gunmen in Garissa, Kenya, Thursday, April 2, 2015. Gunmen attacked the university early Thursday, shooting indiscriminately in campus hostels. Police and military surrounded the buildings and were trying to secure the area in eastern Kenya, police officer Musa Yego said. (AP Photo)

    Some students without their shirts of the Garissa University College get out of a house where they seek refuge after escaping from an attack by gunmen in Garissa, Kenya, Thursday, April 2, 2015. Gunmen attacked the university early Thursday, shooting indiscriminately in campus hostels. Police and military surrounded the buildings and were trying to secure the area in eastern Kenya, police officer Musa Yego said. (AP Photo)  (The Associated Press)

A police official says masked gunmen have stormed a university campus in Garissa Town in eastern Kenya.

Musa Yego says gunshots and explosions can be heard from a building on the campus, which is surrounded by police and military.

It was not immediately clear if there were any fatalities or injured.

Kenya's northern and eastern regions, which border Somalia, have been most affected by attacks blamed on al-Qaida-linked al-Shabab Islamists from Somalia. They have vowed retribution against Kenya for sending its troops to Somalia.