At the gathering, authorities also announced the establishment of a new training centre for the humanitarian sector
He said several people ran into his shop to seek cover and he saw two people with gunshot wounds.
One body covered with a white tarp could be seen in TV images lying on the sidewalk in front of the McDonald's two hours after the shooting.
It was unclear if any of the victims were tourists.
Susan Gregg, a spokesperson for Harborview Medical Center, said a 55-year-old woman shot in the abdomen was rushed into surgery and the boy, who was shot in the leg, was in serious condition. The other victims - five males - are in satisfactory condition, she said.
Gregg added that the nature of the injuries varied from grazing wounds to life-threatening injuries.
One witness interviewed by local media said he had seen two men arguing loudly before they started shooting at one another, hitting bystanders.
Around 40,000 people died from various firearms-related incidents, including suicides and homicides, in 2017 in the US, according to government figures.
At the gathering, authorities also announced the establishment of a new training centre for the humanitarian sector
The authority has strictly forbidden people from drinking the stagnant water or cooking using it
The ‘Tadhamon’ (solidarity) campaign will allow private sector entities, businesses and members of society to make contributions
With thousands of food packages delivered, the company has not only provided sustenance but also a sense of hope to those facing the adversity of natural calamity
Among them are 17 of the top 20 players in the current rankings including a host of Emirates Golf Federation invitees
Bellingham has scored 21 goals for Real since signing in the close season from Borussia Dortmund for 103 million euros
Crown-of-thorns starfish are predators that can devastate coral reefs if their population is left unchecked
After being named World Sportsman of the Year at the Laureus Awards, Djokovic said he was aiming for the Italian Open