LITTLE ROCK (AP) — A federal judge Friday ordered two Little Rock police officers to remain in custody pending detention hearings next month following their arrests on drug charges.

The judge also appointed attorneys for Officers Mark Anthony Jones and Randall Tremayn Robinson, who did not enter pleas during their initial court appearances. Both are charged with conspiring to aid and abet and attempting to aid and abet the possession of marijuana with intent to distribute, and possessing a firearm while taking part in a drug-trafficking crime.

Jones and Robinson, who are half-brothers, were arrested Thursday and have been placed on paid administrative leave. Neither Jones’ attorney, Ron Davis, nor Robinson’s lawyer, Rick Holiman, returned phone messages seeking comment.

Both men are due back in court on June 4.

An FBI agent wrote in an affidavit that Jones was wearing his uniform, carrying a weapon and driving a market patrol car when he was involved in the protection of three controlled drug deliveries orchestrated by a confidential informant working with investigators.

Prosecutors allege that Robinson took part in protecting the third delivery while he was driving a marked patrol car, on duty and in uniform. Investigators said the deliveries totaled about 1,400 pounds of purported marijuana.