2013 Boston Marathon explosion

Authorities plan to release clear video images today of two suspects in the deadly Boston Marathon bombings, the Boston Globe reports.

Police are hoping the public can help identify the men, who are shown carrying black bags near the two explosion sites, according to the Globe. It's unknown when authorities plan to release the images.

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Authorities had scheduled a press conference late Wednesday afternoon, but later canceled it. President Obama and First Lady Michelle Obama are scheduled to visit the city today to meet with victims and attend an interfaith service. President Obama will also deliver a "message of resolve," the Globe reports.

Two homemade pressure cooker bombs filled with nails and other items went off seconds apart near the finish line of the Boston Marathon Monday, killing three people and injuring nearly 200.