The couple arrested by the police investigating the murder of a detective is released

They were arrested as part of the inquiry into the shooting of Detective Chief Inspector John Caldwell in Omagh, Co Tyrone last month.

The 45-year-old man, who was arrested under the terrorism bill in the Belfast area on Tuesday, was released on Wednesday evening.

The 34-year-old woman was arrested in Omagh on Wednesday.

She was held on suspicion of perverting the course of justice and assisting criminals after searching a property in the Omagh area.

The woman was released on bail Wednesday night pending further police investigations.

A number of other arrests were previously made, with all suspects released after questioning.

Mr Caldwell was shot dead multiple times at a sports complex in Omagh after coaching a youth football team last month.

He remains hospitalized in critical but stable condition.

Police have launched an attempted murder investigation.

They have described the dissident Republican group New IRA as their main line of investigation.

Detectives have reissued their appeal for witnesses or anyone with information to call 101.

Detectives are also highlighting a reward of up to £150,000 from charity Crimestoppers.