British customs officials said on Tuesday they had had arrested three people as part of an investigation into money laundering.
This includes two 35-year-olds (a male and a female) from the Croydon area and a 49-year-old male from the Wembley area, a spokeswoman said. These individuals were arrested, questioned and have been bailed pending further investigation.
The investigation is separate from a police inquiry into corruption allegations involving players in the Pakistan team presently on tour in England.
Both investigations follow a newspaper report that Pakistan players had been bribed to fix incidents in the fourth test against England which finished at Lord's on Sunday.
According to a report in The News of the World newspaper, Marhar Majeed, an agent who said he represented 10 Pakistan players, alleged pace bowlers Mohammad Amir and Mohammad Asif had bowled three no-balls between them by pre-arrangement.
Police confiscated the mobile phones of Amir, Asif, test captain Salman Butt and questioned wicketkeeper Kamran Akmal.
Detectives also arrested a 35-year-old man on suspicion of conspiracy to defraud bookmakers. He was released on police bail on Monday.
(Reporting by Michael Holden; Editing by John Mehaffey)