Mr Vaz was elsewhere in Westminster at the time of the theft An iPad and laptop have been stolen from the Westminster office of Labour MP Keith Vaz.
His staff said the theft took place on Thursday afternoon.
Mr Vaz, who is MP for Leicester East, said he was astonished and called for a “more robust approach” to security inside parliamentary buildings.
A spokesman for Parliament said police were investigating “a number of reports of the theft of laptops across the Parliamentary estate”.
Mr Vaz’s office is within the Norman Shaw North building on Victoria Embankment, close to the Palace of Westminster.
Following the theft, the MP, who is also chairman of the home affairs committee, said in a statement: “I am astonished by the thefts taking place from within the parliamentary estate.
“A great deal of effort is taken to protect the outside of building but we need a more robust approach to security inside the building. This is important at any time but especially with the visit of President Obama next week.
“We need to ensure the security of the building is not compromised.”
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