Beijing domestic security police officer said workers checked the wings, legs and anus of each pigeon ahead of time.
One other person got life in jail, and four others received sentences ranging from five to 20 years in jail, state television said.
US called on the Chinese authorities to release all the activists, journalists and lawyers detained ahead of the 25th anniversary.
Beijing police have now trained more than 650 dogs.
Gao allegedly leaked state secrets detailing the party’s vision on economic reforms but preventing challenges to one-party rule.
China has stepped up its rhetoric against what it says is a threat the country faces from Islamist militants.
Russia too expressed concerns about terrorism spreading from Afghanistan.
The vehicles three occupants were killed along with two bystanders,including a Filipino woman.
Car veered off the road at the north of the square,a major tourist attraction,crossed the barriers and caught fire.
China accuses US of spying on its own citizens,discriminating against women and ethnic minorities.
The country has no recent precedent for the role of first lady,and also faces a tricky balance at home.
Former mayor said it was a tragedy that could have been avoided and he hoped the incident could have been resolved peacefully.
Toner refused to draw parallel between the Ramlila Maidan incident with those of brutal crackdown at the Tianamen Square in China.
Jonathan Lee unfurled a sign saying peace treaty and nuclear free DMZ childrens peace forest as he stood outside Tiananmen
China has been issuing angry statements and rejecting calls for Liu Xiabo’s release.