How did US law enforcement agencies finally arrest Al Capone?

They caught him bribing a local politician.

They caught him bludgeoning a police officer to death.

They caught him on charges of tax evasion.

They caught him manufacturing alcohol.

They caught him running a prostitution racket.

They prosecuted him for tax evasion in 193.1 During the highly publicized case, the judge admitted as evidence Capone's admissions of his income and unpaid taxes during prior (and ultimately abortive) negotiations to pay the government any back taxes he owed. Capone was convicted and sentenced to 11 years in federal prison.