Can we draw the following hypothesis from the context? 

Context:

UN official condemns attacks on civilians, calls for unhindered relief access February 7, 2017 As fresh violence flared up in the Ouham – Pende province of the Central African Republic, a United Nations humanitarian official has urged to protect civilians and provide them with unobstructed relief access. "I urge all parties to the conflict to respect international humanitarian law and to ensure the protection of civilians," said Michel Yao, the Acting Humanitarian Coordinator in the country. "Attack against aid workers is a crime against humanity," he added.

Hypothesis: There is only one crime that is a crime against humanity
It's impossible to say