The police have no intention of seeking the arrest at this time of more suspects in connection with the alleged plot to take caretaker Prime Minister Thaksin Shinawatra's life, a senior officer said yesterday.

Meanwhile, the Army has suspended the one person arrested in connection with the alleged plot, Lieutenant Thawatchai Klinchana.

Thawatchai continued to deny knowledge of the purported bomb plot. He said he was simply hired to drive a car later found to contain explosives. It was parked along a route taken by the prime minister's motorcade.

Following a meeting of senior police yesterday, Crime Suppression Division commander Maj-General Winai Thongsong dismissed rumours that investigators planned to apply for arrest warrants for two more suspects.

Winai said the evidence remained scattered and was insufficient to implicate any other suspects at this time.

However, police now believe others involved were near to the car and preparing to detonate the explosives at the time it was intercepted.

Police spokesman Lt-General Ajiravid Subarnbhesaj said the investigation was continuing.

When asked if Thursday's incident had been staged, he said people could speculate all they wanted but the evidence would reveal the truth.

He said all the facts would come out when the allegations were tried in court.

Prosecutors would call witnesses such as bomb expert Lt-Colonel Khamthorn Ooncharoen, he added.

Royal Thai Army commander-in-chief General Sonthi Boonyarat-glin said he suspended Thawatchai from duty on Friday, and would assign a committee to consider disciplinary action against him.

Police continue to question Thawatchai, who has explained his movements on the day of his arrest.

He woke at 5am, left home for Suan Reun at 6am, and arrived at the Internal Security Operations Command (Isoc) office before 8am.

He met a man named Jui in the cafeteria and was asked by him to fetch the car. He did so and was arrested.

He told investigators he was an office worker and had no knowledge of explosives. He was "astonished" when police found bomb materials in the car.

Thawatchai's statement does not, however, tally with Isoc records that show Thawatchai drove the car from the office at about 5.40am.

Police officers reported that Thawatchai had warned them to "beware of the switch!" when they were searching the car.

Thawatchai has been visited by his wife, Sangworn Tadjampa, 45, and family members, and has been provided medicine for a thyroid condition.

The family has engaged a lawyer and will seek bail tomorrow.

Relatives refuse to talk with the news media.