Local reports of damage , fatalities . NEW : At least 10 have been killed , including a 3-month-old , state emergency official says . Survivors share harrowing accounts of encounter with twister . Score: 6 President Obama has `` been briefed on the tragedy in Mississippi , '' spokesman says .
NEW : At least 10 have been killed , including a 3-month-old , state emergency official says . Survivors share harrowing accounts of encounter with twister . Score: 6 President Obama has `` been briefed on the tragedy in Mississippi , '' spokesman says .