What are the options for a Cambodian citizen to extend their visa exemption in Thailand?

A Cambodian citizen who initially entered Thailand on a 14-day visa exemption and later extended it with an embassy letter until April 27 may have options to extend further. It is advisable to contact the immigration office for clarification, especially regarding any sweeping amnesty policies currently in place. Checking if the individual entered under the Bilateral Agreement may also be crucial for determining extension options and consequences of potential overstays.