However, the king's order could not be fulfilled. A royal chronicle written by Lord Thiphakorawong (Kham Bunnag), then foreign minister, recorded that many Thai men fell ill after entering Cambodian wilderness. The chronicle also stated that forest-dwelling Khmer people ambushed the Thai army, killing many leading generals. King Mongkut then ordered the construction of the model within Wat Phra Kaew, instead of the real Angkor Wat that could not be brought to Bangkok.