Thugs broke into former Prime Minister Raila Odinga’s office in Nairobi on Monday night and stole valuables.
Mr Odinga told the Nation the thugs appeared to have used master keys to gain entry to the Raila Odinga Centre in Upper Hill as there was no evidence of forced entry.
Speaking at Nyayo House, Nairobi where he had gone to renew his passports, Mr Odinga, who looked disturbed by the incident, said police were at the scene.
"It is hard to tell how they managed to get in as the door is intact. The building is also guarded by Administration Police who had not reported until now," Mr Odinga, who was accompanied by his spokesman Dennis Onyango, said.
Among the documents taken away were several files that had information on the Orange Democratic Movement and its political activities.
Other files carted away contained business and personal documents.
Police recorded statements from caretakers. The Nation later learnt APs guarding the premises had been recalled.
Mr Onyango said the cost of stolen goods was yet to be quantified.
"Police from Capitol Hill are there recording statements. The goods stolen are still being quantified. Valuables were stolen. The caretaker is among those being questioned,” Mr Onyango said.
"It is hard to tell how they managed to get in as the door is intact. The building is also guarded by Administration Police who had not reported until now," - Mr Odinga.
Earlier, Mr Odinga was received by acting director of Immigration Jane Waikenda at her office, where he signed a visitors' book before his photograph was taken for new passports - an ordinary and diplomatic one.
“I am very happy with the kind of efficiency as the system is now digitised. My passports had no more pages for stamping and I had to come physically for my photo to be taken,” Mr Odinga said.
Mr Odinga called for speedy issuance of national identification cards saying many youth did not vote in March polls due to lack of IDs.
He said the issuance of IDs should be a continuous process as it is right of all Kenyans to get the documents.
“Without IDs youth cannot get employment or even loans for development,” Mr Odinga said.
The centre was Mr Odinga’s campaign headquarters in 2007 and was also used in the March polls.
Mr Odinga has been occasionally using the office.
The thieves stole 266 13-kilogramme cylinders and another 431 6-kilogramme cylinders from East Africa Spectre Limited on Mombasa Road.
They also vandalised vehicles within the compound and stole various motor vehicle parts.
However, the cylinders were later found near Daystar University in Athi River, about 30 kilometres from Nairobi.
Mr Odinga has also complained of frustrations by the Jubilee administration after he was blocked a number of times from accessing the VIP lounge at Jomo Kenyatta International Airport.
Mr Odinga was also blocked from using the VIP parking lot at the Moi International Airport, Mombasa.