Angry relatives and loved ones of Chinese passengers on board Malaysia Airlines Flight MH370 protested at the Malaysian embassy in Beijing on Tuesday demanding more proof about the missing plane’s fate, after Malaysian Prime Minister Najib Razak announced Monday that the aircraft had crashed somewhere in the southern Indian Ocean.

Nearly 200 people shouted slogans like “The Malaysian government are murderers” and “We want our relatives back” as they marched to the Malaysian embassy, which is located about 2.5 miles from the Metro Park Lido Hotel, where relatives and friends of the missing passengers have been staying during the ongoing search for the missing plane, which disappeared March 8, The Malaysia Insider reported.

The relatives held placards, saying: “MH 370, Don't let us wait too long!” and “1.3 billion people are waiting to greet the plane.” The protesters also wore matching T-shirts that said: “Best of luck to MH370, return home safely.”

After Razak declared Monday that the plane had "ended in the southern Indian Ocean" -- citing new data from the UK’s Accidents Investigation Branch -- and that none of the 239 people aboard survived, an unidentified family member read out a statement at the Lido Hotel, denouncing Malaysia Airlines, the Malaysian government and its military for “constantly trying to delay, hide and cover up the truth.”

“These despicable acts have not only fooled and devastated physically and mentally the families of our 154 Chinese passengers, at the same time they have also misled and delayed the rescue operation, wasted a lot of manpower, material resources and lost the most precious time for the rescue efforts,” Reuters quoted the family member as stating.

Most of the passengers on board the plane were Chinese citizens and China, which has attempted to play an active role in the search efforts, has complained of being frustrated by the handling of the situation by Malaysian authorities who it accuses of withholding crucial information during the early part of the search.

Xie Hangsheng, the Chinese deputy foreign minister, demanded all relevant satellite-data analysis from Malaysia that could demonstrate how Malaysian authorities reached the conclusion about the fate of the plane. Malaysia Airlines has reportedly promised to take the relatives to Australia, which is now coordinating the focal point of the search about 1,500 miles southwest of Perth, in the southern Indian Ocean.

"If the 154 passengers did lose their lives, Malaysia Airlines, the Malaysian government and military are the real executioners who killed them," the statement from the relatives read, according to UK-based Metro. "We the families of those on board submit our strongest protest against them."