A woman wipes tears during the first anniversary commemoration of the terror attack in Kenya's Moi University campus in Garissa in Nairobi, Kenya, on April 2, 2016. The Al-Shaabab militants attacked Moi University campus in Kenya's Garissa and killed 148 people on April 2, 2015. (Xinhua/Pan Siwei)

A woman holds a candle to mourn victims during the first anniversary commemoration of the terror attack in Kenya's Moi University campus in Garissa in Nairobi, Kenya, on April 2, 2016. The Al-Shaabab militants attacked Moi University campus in Kenya's Garissa and killed 148 people on April 2, 2015. (Xinhua/Pan Siwei)

People mourn victims during the first anniversary commemoration of the terror attack in Kenya's Moi University campus in Garissa in Nairobi, Kenya, on April 2, 2016. The Al-Shaabab militants attacked Moi University campus in Kenya's Garissa and killed 148 people on April 2, 2015. (Xinhua/Pan Siwei)

People hold candles to mourn victims during the first anniversary commemoration of the terror attack in Kenya's Moi University campus in Garissa in Nairobi, Kenya, on April 2, 2016. The Al-Shaabab militants attacked Moi University campus in Kenya's Garissa and killed 148 people on April 2, 2015. (Xinhua/Pan Siwei)

A woman mourns victims during the first anniversary commemoration of the terror attack in Kenya's Moi University campus in Garissa in Nairobi, Kenya, on April 2, 2016. The Al-Shaabab militants attacked Moi University campus in Kenya's Garissa and killed 148 people on April 2, 2015. (Xinhua/Pan Siwei)

The list of victims is seen during the first anniversary commemoration of the terror attack in Kenya's Moi University campus in Garissa in Nairobi, Kenya, on April 2, 2016. The Al-Shaabab militants attacked Moi University campus in Kenya's Garissa and killed 148 people on April 2, 2015. (Xinhua/Pan Siwei)