NEW DELHI, JUNE 14 The prime witness is still missing, the mystery deaths of two suspects still unsolved and the CBI has admitted that it has evidence to substantiate Satyendra Dubey’s corruption allegations. Now it has claimed that it has ‘‘cracked’’ the Dubey case and has in its custody three of the assailants, the gun they used and the engineer’s briefcase they snatched.

In all, five men have been arrested with CBI officials saying a couple more arrests could be made shortly. The arrested men are either petty criminals or daily wagers from Katari village in Gaya.

The CBI claims that Rs 4,500 was stolen by the assailants from Dubey—Rs 4,000 from his briefcase, the rest from his pocket—which was then ‘‘distributed equally’’ among them.

The agency says that it’s tying up the ‘‘loose ends’’ in the murder case and will also investigate allegations of corruption in NHAI projects as highlighted by Dubey in his letter to the Prime Minister’s Office.

As for the poisoning deaths of two Katari residents who were questioned by the CBI—the Gaya police have already called these murders—agency officials said they were working on arresting those behind these deaths, too.

The CBI claimed that after confronting the four suspects Uday Mallah, Mantu Kumar, Tutu Kumar and Babloo with Sarvan Kumar—in Patna this morning—it recovered a country-made revolver or ‘‘katta’’ which Mantu had used for the killing.

Earlier, during interrogation, CBI officials said, Mantu had said that it was Paswan who wielded the gun but apparently confessed to his crime today.

Paswan, according to CBI’s version, was the one who also burst a ‘‘fire cracker’’ to scare Dubey away and Uday, the youngest of the assailants was the one who was told to hide the gun after the murder.

The agency said it had also recovered Dubey’s belongings, include a bunch of keys, a mobile phone charger, family photographs, a laminated identity card and some office papers.

All these were in his briefcase found in a dry well, identified by his assailants this morning.

While the papers and photographs are damaged because of water seepage, Dubey’s I-card is intact, the CBI said.

The belongings will now be shown to the engineer’s family for final identification and his briefcase will be taken to the shop where it was purchased.

The weapon and the two live cartridges are being sent by the CBI for forensic examination.