Ban said he felt the government was “committed to completing the process” of the court and that Cambodians seek and deserve justice.
Soun Sophoan, who attempted to lead 30 activists toward Ban's motorcade, remained in serious condition on Thursday night.
Pung Chiv Kek, founder of the rights group Licadho, said Cambodia must appreciate the meaning of the Paris Peace Agreement of 1991.
Rights groups and other residents have looked for him to address what they say is a deteriorating rights situation in Cambodia.
One in five Americans has irritable bowel syndrome.
Cambodian-Americans face social, cultural and economic difficulties, along with similar communities from Laos and Vietnam.
Decades of conflict shattered Cambodia's infrastructure - its roads, ports and railways.
Residents said in a letter they wanted “to stop the forced eviction from their homes and lands.”
Aki Ra, who is 40, has been demining since 1993, without technical guidance or assistance.
Demonstrations, to be held in France, Canada and the US, will also coincide with the anniversary of the Paris Peace Agreement.
More than 100 police cleared out vendor stalls surrounding the Olympic Stadium in Phnom Penh on Friday.
In the last year, more than 120,000 Cambodian workers abroad have sent some $150 million in remittances.