An article yesterday on the sentencing of convicted Baltimore drug dealer Anthony Grandison incorrectly reported that a hotel employe testifed that he rented a room to Grandison in exchange for two bags of heroin. A man unconnected with the Warren House Motor Hotel testifed that he rented the room for Grandison in exchange for two bags of heroin. U.S. Attorney J. Frederick Motz said yesterday that no one connected with the hotel was involved in any drug transactions.

Anthony Grandison, a 30-year-old Baltimore man whose trial gained wide publicity when a key prosecution witness and another person were machine gunned to death, was sentenced by a federal judge here today to 21 years in prison and fined $50,000 for drug and handgun offenses.

The witness, Scott Piechowicz, 27, a Prince George's man who managed the Warren House Motor Hotel in Pikesville, and his 19-year-old sister-in-law Susan Kennedy, were shot to death at the hotel's front desk last April 28.

The Associated Press quoted U.S. District Judge Joseph C. Howard, who said Grandison was a "significant danger to society," and called him a "cold, calculating, callous character in the business of poisoning the public."

Grandison and another Baltimore man, Vernon Evans Jr., have been charged with first degree murder in the slayings. Police allege that Grandison hired Evans for $9,000 to kill Piechowicz; Baltimore County State's Attorney Sandra A. O'Conner has said she will ask that the two men be given the death penalty.

Piechowicz had been scheduled to testify against Grandison and was considered an important witness linking Grandison to the hotel, where federal authorities claim they found a cache of heroin and cocaine they said belonged to Grandison. The drugs, valued at an estimated $350,600, were discovered after Grandison was arrested for a parole violation and authorities had obtained a search warrant. Grandison's attorney claimed the defendant had neither registered for nor occupied the room, but a hotel employe testified during last month's trial that he had rented Grandison the room in exchange for two bags of heroin.

Piechowicz said in pretrial testimony later read to jurors that FBI agents had asked him to inspect the hotel room, and that he had found a handgun and drug paraphernalia in a tote bag.

During the trial, Assistant U.S. Attorney Ty Cobb, who prosecuted the case, called Grandison a "high roller" and "master of manipulation." He said Grandison was a professional drug dealer "who has different designer jogging suits for every day and gold all over his body."

U.S. District Judge Joseph C. Howard sentenced Grandison to eight years for possession of heroin with intent to distribute, eight years for possession of cocaine with intent to distribute, and five years on possession of a handgun. Howard ordered that each sentence run consecutively, and that Grandison be fined $55,000.