Missing plane's transponder was deliberately disabled, says Malaysian PM Najib Razak

A Malaysia Airlines flight MH 370 carrying 239 passengers and crew aboard, which went missing seven days ago, remains unaccounted for, leaving family members in tormented wait.

Malaysian Prime Minister Najib Razak today addressed a press conference. 

Here are the highlights:

• A week ago Malaysia Airline flight MH370 disappeared
• Our prayers are with families of those on board
• We have ordered search area to be broadened, all relevant info freely shared with investigation team
• As of today 14 countries involved in search
• I have shared information with authorities who can interpret danger
• I put national security second to search
• We followed every credible lead, sometimes it led nowhere
• There have been intense speculations
• We have responsibility to only release information that has been corroborated
• We have searched the south China sea
• Primary radar showed plane moving to area north of Strait of Malacca
• We expanded search to that area and to Andaman sea
• This morning, I was briefed by FAA, NTSB, and other teams on new info 
• Can say with high degree of certainty that communication systems on board the plane were deliberately switched off
• Transponder were switched off in area bordering Vietnam and Malaysia
• Movement of missing Flight MH370 was consistent with deliberate action of someone on plane
• According to the date, the last communication with plane was on March 8 
• Last satellite contact from Malaysian plane more than six hours after primary radar lost
• Plane's last communication in two possible air corridors: Kazakhstan and Thailand, and Indonesia to southern Indian Ocean
• Investigations have refocused their investigation on the crew and passengers on board
• Still investigating possibilities what caused MH370 to deviate from original path 
• Search for MH370 has entered new phase 
• Despite reports that plane hijacked, we are still investigating all possibilities
• New satellite information can affect search operations
• We are ending search in south China sea and reassigning assets
• Two new areas involve many countries so relevant foreign ministries have been called for briefing