Four men were arrested early morning today outside exiled CBI boss Alok Verma's home in Delhi. The men, who were allegedly outside the building. The men were caught allegedly snooping from parked cars, in continuing drama involving the country's main investigating agency. The spies were caught on camera and also arrested, in what can be perceived as a glimpse into what many would describe to be a sort of disconnect between various agencies.

Two of the men were found sitting in a car outside the gate of Mr Verma's home on 2 Janpath in one of the most high security zones of Delhi, at around 7:45 am. The other two spies were reportedly in a car near the back gate. Visuals on TV showed security officials dragging them by their shirts across the road.

Intelligence Bureau sources denied spying, saying it is "routine" to post its people in the area, which is very close to the 10 Janpath home of Congress leader Sonia Gandhi. "Would they carry I-cards if they were in covert intelligence," a top officer questioned.

The strange incident did end up fueling speculation of surveillance on Mr Verma, who was abruptly sent on forced leave yesterday and replaced by an interim chief, days after he launched an investigation against his deputy Rakesh Asthana, accusing him of corruption. Mr Asthana, who has been charged in a case filed by the CBI, has also been sent on leave.

Here are the highlights on the arrest of 4 men outside CBI chief Alok Verma's home: