New York Times: 7 Police Officers Guarding Vaccination Team in Pakistan Are Shot Dead
“Seven police officers keeping watch over a polio vaccination campaign were gunned down in two separate attacks in a suburb of Pakistan’s southern port city of Karachi on Wednesday, government officials said…” (ur-Rehman/Masood, 4/20).

Reuters: Seven Pakistani policemen killed during anti-polio drive
“…While militants in Pakistan have on numerous occasions attacked teams trying to eradicate the crippling childhood disease, a police chief said his men were target this time, not the health workers…” (Hassan, 4/20).

Wall Street Journal: Gunmen Kill Seven Police Officers Guarding Polio Workers in Pakistan
“…Eight attackers on four motorcycles and armed with pistols targeted two teams in different neighborhoods of the Orangi area of Karachi, police officials said, adding that the shootings happened within minutes of each other…” (Nauman, 4/20).