Four men were arrested on Thursday outside the residence of Alok Verma, the CBI director who was sent on leave by the agency amid an ongoing spat between the top officials.

The men were caught suspiciously lurking around the building and snooping this morning.

The identity of the suspects and their motive is yet to be ascertained. The suspects were intercepted when the Verma’s chief security officer found them sitting in a car, said sources.

Delhi Police and the Central Bureau of Investigation (CBI) teams are looking into the matter.

Read | CBI chief Alok Verma, Asthana sent on leave; Nageshwar Rao takes over as interim chief

In an unprecedented move, the Central Bureau of Investigation divested Director Alok Verma and Special Director Rakesh Asthana from their duties on Wednesday as the two hit out at each other over bribery accusations in the meat exporter Moin Qureshi money laundering case.

Joint Director M Nageshwar Rao was given the charge of the director with immediate effect. The decision was taken by the prime minister-led appointments committee on Tuesday night.

The decision to appoint Rao came a day after Special Director Rakesh Asthana moved the Delhi High Court seeking the quashing of FIR filed against him by the CBI in connection with an alleged bribery case.

The CBI had filed an FIR against Asthana for allegedly accepting a bribe from a businessman, who was related to Moin Akhtar Qureshi case.

Read | CBI vs CBI: Director Alok Verma takes fight to Supreme Court, plea to be heard on Oct 26

Meanwhile, CBI Director Alok Verma on Wednesday moved the Supreme Court challenging the probe agency’s decision to send him on leave. The CBI chief’s petition was accepted by the Supreme Court and is likely to be heard on October 26.