A massive 7.7-magnitude earthquake struck Southeast Asia on Saturday, with the epicenter near Mandalay, Myanmar, deeply affecting both that country and Thailand.

The disastrous earthquake shook Myanmar and Thailand, has led to widespread destruction and high numbers of casualties, as the New York Post reports.

The earthquake, which occurred around midday, led the U.S. Geological Survey to issue a red alert predicting a death toll potentially ranging from 1,000 to 10,000.

The impact was felt most severely in Myanmar’s cities of Mandalay and Naypyidaw, and as far west as Bangkok, Thailand, where buildings, including skyscrapers and mosques, crumbled.

In Myanmar, the immediate aftermath saw at least 144 confirmed fatalities and 732 injured, prompting the government to declare a state of emergency in Naypyidaw. The collapse of various structures has triggered extensive rescue operations.

Witness Accounts Highlight Chaos, Panic

As buildings quaked, eyewitnesses described scenes of terror and confusion. Fraser Morton, caught in the turmoil in Bangkok, recalled, "All of a sudden the whole building began to move. Immediately there was screaming and a lot of panic,” highlighting the fear that gripped people as structures swayed and debris fell.

Similarly, Paul Vincent expressed the shock experienced by many: “When I saw the building swaying, oh my God, that’s when…it hit me.”

His account captures the stark reality of the moment when the earthquake’s magnitude became apparent to those affected.

Further adding to the distress, a witness in Myanmar shared harrowing scenes of a five-story building collapsing right before their eyes, stating, "We all ran out of the house as everything started shaking. I witnessed a five-story building collapse in front of my eyes. Everyone in my town is out on the road and no one dares to go back inside buildings," which was reported by Reuters.

Extensive Damage, Loss Sustained in Bangkok

The situation in Thailand was particularly dire in Bangkok, where an eight-story skyscraper collapsed, leading to at least eight confirmed deaths. The disaster also trapped around 100 people beneath rubble, according to official reports, fueling a frantic search for survivors.

Besides the catastrophic skyscraper collapse, smaller but significant incidents also led to casualties. Bangkok alone reported other structural collapses that resulted in additional fatalities and numerous injuries.

Thailand’s Defense Minister Phumtham Wechayachai provided an update on the rescue efforts. "Numerous people were pulled from the rubble, while dozens more were unaccounted for," he said, indicating ongoing and urgent rescue operations.

International Response, Recovery Efforts Ensue

Both national forces and international aid agencies sprang into action, deploying emergency teams to the hardest-hit areas. Rescue operations were intense and swift, with teams working tirelessly to retrieve victims and provide medical assistance.

The destruction of infrastructure also includes hospitals and emergency facilities, complicating efforts to treat the injured and provide shelter to those displaced. The international community has been quick to offer support, sending aid and resources to assist in the recovery process.

In addition to search and rescue missions, efforts are underway to assess the structural integrity of remaining buildings, a critical step to prevent further casualties and ensure the safety of the populace in the quake-hit regions.

Challenges Lie Ahead in Earthquake's Aftermath

As recovery operations continue, the focus shifts to rebuilding and addressing the extensive damage. The strong aftershock that followed, measured at 6.4 magnitude, further complicated these efforts, highlighting the region’s vulnerability to seismic activity.

Senior Gen. Min Aung Hlaing of Myanmar emphasized the critical nature of ongoing operations. “Casualties are expected to rise,” he stated, underlining the urgent need for continuous and coordinated response efforts.

The earthquake not only tested the emergency responsiveness of Myanmar and Thailand but also brought to light the human element in such disasters -- the resilience and rapid community response that follows in the wake of such massive disruptions.