A Sea Hawk helicopter departs from USS Pinckney to search for the missing Malaysia Airlines flight on March 9, 2014.
A Sea Hawk helicopter departs from USS Pinckney to search for the missing Malaysia Airlines flight on March 9, 2014. U.S. Navy/ZUMA Press
 
TIME | 10 March 2014 

Officials are expanding the search area to a 100-mile radius for a Malaysia Airlines plane that went missing en route from Kuala Lumpur to Beijing this weekend as search crews, families and observers across the world wonder how a plane seemingly disappeared without a trace

Officials announced Monday that the search area for the missing Malaysia Airlines Flight 370 has expanded to a 100-nautical-mile radius after three days of scouring the waters of the Gulf of Thailand have failed to offer any clues. The widened search area includes waters over 100 miles away from the plane’s last known location between Malaysia and Vietnam, the New York Times reports.

On Saturday, the plane carrying 227 passengers and 12 crew members vanished — so far without a trace — without sending a distress signal to air-traffic controllers. Since the plane’s disappearance, about 34 aircraft and 40 ships have searched the waters for any signs of the missing Boeing 777 plane to no avail. Several false alarms, however, have been reported. An oil slick, presumed to be from the missing aircraft, was discovered to be fuel from cargo ships. Reports that pieces of the plane had been found floating in water also turned out to be untrue.

The mystery surrounding the missing plane continued to grow on Monday as reports that two passengers who possessed stolen passports had their tickets bought by an Iranian middleman. Their one-way tickets were reportedly purchased using cash from a travel agency at Thai beach resort. According to the Associated Press, the owner of the agency says a man named “Mr. Ali” made the purchase, though she does not believe he is connected to terrorism. It is unclear, however, whether or not the two men have anything to do with the flight’s disappearance. In fact, stolen passports are a common occurrence across the globe.

Meanwhile, China sent 13 officials to Malaysia on Monday to help investigate the crash. Most of flight MH370’s passengers — 153 out of 277 — held Chinese passports.

Authorities have yet to rule out any possible reason for the missing plane.