2016 Candidates Urge End to Violence in Baltimore

Declared and potential presidential candidates from both sides of the aisle are calling for an end to the violence in Baltimore, while acknowledging serious questions remain about how Freddie Gray died in police custody.

Two potential candidates, former Maryland governor and Baltimore Mayor Martin O'Malley and former Johns Hopkins neurosurgeon Ben Carson, have strong ties to the city. O'Malley cut short an overseas trip after riots erupted on Monday.

"Governor O'Malley has arrived in Baltimore to be with the people in the city that he loves. Since last night, he has been reaching out to community leaders, the Mayor, and members of the clergy to offer his assistance where appropriate and needed," spokeswoman Lis Smith said Tuesday. He will remain in the city to promote volunteer opportunities in the coming days.