CAIRO: A computer programmer, startled by a helicopter clattering above his quiet Pakistani town in the early hours of the morning on Monday, did what any social-media addict would do: he began sending messages to the social networking site Twitter.

Soon the sole helicopter multiplied into several and gunfire and explosions rocked the air above the town, and Athar's tweets quickly garnered tens of thousands of followers as he apparently became the first in the world to describe the U.S. operation to kill one of the world's most wanted militants.

Athar did not respond to a request for comment — he explained in another tweet that a filter he set up to stop his email box from flooding could be culling out requests for interviews. He was up to more 70,000 followers by Monday evening.

“I apologise for reporting the operation 'unwittingly/unknowingly' — had I known about it, I would have tweeted about it 'wittingly' I swear,” he tweeted after realising what he had witnessed.

Later, he gave an interview to Al-Jazeera's English-language news network via Skype as he sat in a cafe. When asked if he was scared, he said that he's from Lahore, “so I've had my share of bomb blasts”.

His first tweet Monday was innocuous: “Helicopter hovering above Abbottabad at 1AM (is a rare event).”

The noise alarmed Athar, who had moved to the upscale area of Abbottabad to get away from city life after his wife and child were badly injured in a car accident in the sprawling city of Lahore, according to his blog in July.

Nestled in the mountains around 60 miles northeast of the capital, Abbottabad is a quiet, leafy town featuring a military academy, the barracks for three army regiments and even its own golf course.

As the operation to kill Osama Bin Laden unfolded, Athar “liveblogged” what he was hearing in real time, describing windows rattling as bombs exploded.

He questioned whose helicopters might be flying overhead. “The few people online at this time of the night are saying one of the copters was not Pakistani,” he tweeted.

Athar then said one of the aircraft appeared to have been shot down. Two more helicopters rushed in, he reported.

Throughout the battle, he related the rumours swirling through town: it was a training accident. Somebody was killed. The aircraft might be a drone. The army was conducting door-to-door searches in the surrounding area. The sound of an aeroplane could be heard overhead.

Soon, however, the rumbling of international events far beyond the confines of this quiet upscale suburb began to dawn on Athar, and he realised what he might be witnessing.

“I think the helicopter crash in Abbottabad, and the President Obama breaking news address are connected,” he tweeted.

Eight hours and about 35 tweets later, the confirmation came: “Osama Bin Laden killed in Abbottabad, Pakistan,” Athar reported. “There goes the neighborhood.” — AP