Dhaka, July 1 -- Thailand's Constitutional Court on Tuesday suspended Prime Minister Paetongtarn Shinawatra from office, pending an investigation into allegations that she breached ethical standards during a leaked phone conversation with a senior Cambodian leader regarding a border dispute.

Paetongtarn, who has faced mounting criticism over her handling of the dispute that escalated into an armed clash on May 28, allegedly appeared overly submissive to Cambodian Senate President Hun Sen during the call. The confrontation resulted in the death of a Cambodian soldier.

The leaked audio, intended to ease tensions, instead provoked widespread backlash, sparking public protests and accusations that Paetongtarn compromised national interests....