Syrian Army Command has said it will cease military operations from Friday morning until Monday, Reuters reports quoting Stave TV.
The Army also said it reserves the right to respond to rebel attacks and bombings, despite the temporary ceasefire, Reuters reports.
More top news
The Transport Secretary had been due to address the Northern Transport Summit in Manchester.
Police have launched a murder inquiry and two men are in custody.
Foreign Secretary Boris Johnson has faced calls to quit over his opposition to Heathrow expansion.