102.89—Initiation of proceedings.
Whenever it is charged that any person has engaged in an unfair labor practice within the meaning of paragraph (4)(D) of section 8(b) of the Act, the regional director of the office in which such charge is filed or to which it is referred shall, as soon as possible after the charge has been filed, serve upon the parties a copy of the charge together with a notice of the filing of the charge and shall investigate such charge and if it is deemed appropriate to seek injunctive relief of a district court pursuant to section 10(1) of the Act, he shall give it priority over all other cases in the office except other cases under section 10(1) and cases of like character.