Commentator Keli Goff has told Daybreak that "churches around the US will be ringing bells 26 times to commemorate the lives lost in the US shooting."
She added: "There's also going to be a moment of silence across the internet. A number of news sites will actually go dark at 9.30am."
More top news
Masked machete-wielding raiders stormed into a convenience store and threatened the assistant, before stealing cash, cigarettes and alcohol.
GPs have a public duty to tell authorities if a patient is driving against medical advice, new guidance from the GMC says.
The Government may be about to announce a new levy on council tax of up to 2% to replenish social care budgets.