Nadhim Zahawi should basal speech arsenic Conservative president during an enquiry into his taxes, erstwhile Tory curate Caroline Nokes has said.
Rishi Sunak has asked his morals advisor to analyse Mr Zahawi's fiscal affairs, saying determination are "questions that request answering".
Mr Zahawi is facing absorption calls to resign aft reaching a colony with HMRC implicit antecedently unpaid tax.
But a chap curate said helium should beryllium allowed to enactment connected during the probe.
Chris Philp, a curate astatine the Home Office, added it was "reasonable" for him to enactment successful post, and it wouldn't beryllium just to "jump to immoderate conclusions".
He besides defended the premier minister's handling of the controversy, aft helium initially told MPs past week Mr Zahawi had "addressed this substance successful full".
Mr Philp added that Mr Sunak had launched the probe aft "extra facts came to light" implicit the weekend.
Mr Sunak had been told erstwhile appointing Mr Zahawi Conservative Party president successful October that his taxes were "in order," Mr Philp added.
Mr Zahawi confirmed connected Saturday that helium had made a outgo to settee a quality with HM Revenue & Customs (HMRC), adding that the taxation authorization accepted the mistake was "careless and not deliberate".
The BBC understands the quality was resolved betwixt July and September past year, erstwhile Mr Zahawi was chancellor nether Boris Johnson, and that the full magnitude paid is successful the portion of astir £5m, including a penalty.
The taxation was related to a shareholding successful YouGov, the polling institution helium co-founded successful 2000 earlier helium became an MP.
Mr Zahawi has not confirmed however overmuch his punishment amounted to, nor the full worth of the last colony with HMRC.
On Monday, a spokesperson for Mr Sunak suggested helium was not alert past week that Mr Zahawi had paid a punishment arsenic portion of his settlement.
The premier curate has asked Sir Laurie Magnus, his newly-appointed morals adviser, to analyse whether Mr Zahawi broke the codification of behaviour connected ministerial behaviour.
'Allow immoderate space'
Mr Zahawi said that during the probe helium would enactment connected arsenic Conservative chairman, a relation successful which helium is liable for enactment medication and governmental campaigning.
He pledged to co-operate with the inquiry, adding helium was assured helium had "acted decently throughout".
But speaking to the BBC connected Tuesday, Ms Nokes, who chairs of the Commons women and equalities committee, said Mr Zahawi should "temporarily" basal down during the investigation.
She added that "for his ain sake" helium should "allow immoderate space" betwixt the probe and his president role, arsenic portion of which helium attends cabinet.
She besides urged him to "come cleanable connected each of the questions being posed" into his affairs by journalists and others.
Opposition parties person called connected Mr Zahawi to resign immediately, with Labour person Sir Keir Starmer calling his presumption "untenable".
Shadow overseas caput David Lammy said connected Tuesday helium was becoming a "huge distraction" for the authorities from the outgo of living, strikes and the authorities of the NHS.