The President of the United States, Joe Biden today will call on Americans "not to resort to hatred" and for Congress to adopt arms control measures. He and the first lady Jill Biden, today in Buffalo, New York, will pay tribute to the victims of Saturday massacre.

They will visit the site of the tragedy and send condolences to the relatives of the victims of the mass shooting, and will also meet with representatives of the security and emergency services, and local leaders.

"The president will call this heinous act what it is - terrorism based on hatred and a perverted ideology that tears the soul of our country apart," a White House official said today.

Biden will urge Congress to "take steps to remove weapons from our streets and to prevent them from falling into the hands of criminals and people with serious mental illnesses that make them dangerous to themselves and others."

What is known is that the 18-year-old Peyton Hendron, a white man, on Saturday in a supermarket, located in a part of the city where mostly African Americans live, killed ten people and wounded three more. Of the thirteen, eleven are black.