Ottawa ? Police have arrested two more Lawrence residents suspected of having a part in the shooting of an Ottawa resident last week.

And although Franklin County prosecutors likely will file formal charges today, the arrests suggest a widening conspiracy to murder Michael Miller, a Lawrence man who was scheduled to testify in an aggravated-battery case hours after he was shot.

Lawrence and Ottawa police arrested Jeffery Allen Campbell, a 29-year-old homeless man, and Kay Frances Gaillard-Taylor, 49, during the weekend in Lawrence. Both were arrested under suspicion of attempted first-degree murder.

On Friday, Lawrence police arrested 38-year-old Lisa K. Winter also under suspicion of attempted first-degree murder in Miller’s shooting.

Campbell was arrested by Lawrence police and Ottawa detectives Monday at the Easy Living mobile home park at 3323 Iowa. Reports didn’t list whose home was involved. Police said Gaillard-Taylor was arrested Friday, but they wouldn’t say where.

However, jail records listed Gaillard-Taylor’s residence on the 1700 block of South Miller Drive.

Both are accused of taking part in the shooting of Miller, who was the victim and lone witness in the trial of Louis G. Galloway, 43. Galloway was charged with battering Miller last year in an alleged home burglary at Miller’s former home in Lawrence.

Police found Miller on Dec. 20 in the middle of South Hickory Street in Ottawa after he had been shot several times with a small-caliber handgun.

Ottawa police Capt. Randy Allan said Wednesday that although they still haven’t been able to speak with Miller, he was expected to survive his injuries.

Winter and Gaillard-Taylor remained in Franklin County Jail Wednesday after a judge approved an affidavit holding them for an additional 48 hours. Their bonds have been set at $750,000 each.

Campbell’s bond has not yet been set, jail records show.

Community Drop-In Center director Loring Henderson said that he had been contacted by police and was cooperating with them. He said Campbell wasn’t at the shelter much.

“Not a frequenter,” Henderson said of Campbell. “Not someone we knew very well.”

Ottawa police said that although three arrests have been made in the case, the investigation continues.

Allan wouldn’t comment on the scope of the possible conspiracy or how the suspects knew Miller – details that may surface after Franklin County prosecutors file formal charges.