Syria’s UN envoy says terrorists involved in Brussels attacks fought in Syria

These are some of the headlines we are tracking for you in this edition of Press TV's Top 5:

• Syria’s UN envoy says the terrorists who carried out Tuesday’s deadly attacks in Brussels had been fighting and killing people in Syria before returning to Brussels.
• People in the EU capital Brussels observe a minute of silence in memory of the victims of the deadly terrorist attacks in the city.
• The Israeli military imposes a four-day closure on the occupied West Bank over a Jewish holiday.
• Three more US states hold primary elections on Tuesday. Hillary Clinton and Donald Trump still lead the primaries despite defeats against their opponents.
• The UN refugee agency says an unprecedented number of South Sudanese refugees are escaping to Uganda due to food insecurity in their country.