Why didn't anyone notice the gunmen?

The editors of Pakistan's Jang raise questions regarding the attack on the Sri Lankan team in Lahore, those that the government may be forced to answer over the next few days.

... the attack was carried out close to a police station and that the attackers must have conducted a reconnaissance for them to set up a kill-zone – and nobody noticed? Nobody noticed that up to fourteen heavily armed men using at least three cars, as well as rickshaws and bicycles, were securing a road junction in the centre of Lahore? A reasonable person may infer from this that there was a failure of intelligence, both electronic and human.