LABOUR frontbencher David Lammy is being investigated by the parliamentary standards commissioner, it has emerged.
It is understood that the allegations centre on the registration of interests.
Kathryn Stone is investigating the shadow foreign secretary under four different sections of the rules, including areas covering earnings, gifts and foreign travel.
The investigation, opened on Wednesday, was included in an update to the Parliament website.
It comes just a week after an investigation was launched into Labour chief Keir Starmer.
Lammy's boss is under investigation for multiple failures to register gifts from football teams and book royalties worth thousands of pounds on time.
The Labour leader said he was “absolutely confident” he had not broken the MPs’ code of conduct despite the probe by the Parliamentary Commissioner for Standards.
But Starmer apologised to watchdog Stone “for the fact that administrative errors in his office have led to a small number of late declarations”, according to his spokesman.
Under the rules, MPs must register changes to their financial interests within 28 days.
Lammy’s financial register contains a series of interests registered after that period, including a speech in the US on the invasion of Ukraine.
And a sum of £3280 received from the Canary Wharf Group on December 1 for a speech and question-and-answer session was not registered until May 27.