Two people have been killed and two more critically injured when a gunman opened fire on two motorists and a Metro bus in the US city of Seattle.
According to reports, the gunman then caused a collision as he tried to flee in a stolen car during afternoon rush hour.
The suspect was arrested but his motive was not immediately clear.
In a press briefing, Deputy Police Chief Marc Garth Green called the shootings a "random, senseless act".
The suspect, who was not identified, is being treated for non-life-threatening injuries

Iran and US agree to halt attacks and renew talks, US official says
Putin rejects Ukraine proposal to limit long-range strikes
Qatari citizen killed from shrapnel due to 'military operations', one resident injured
33 people rescued, thousands still missing after Venezuela quakes
Pope Leo prays for Venezuela quake victims as EU sends emergency aid
