NAIROBI, Kenya -- The Kenyan track and field team manager who was sent home from the Olympics after being caught offering to help cover up doping for cash was arrested on arrival at Nairobis airport and appeared in court on Tuesday.Kenyan police and prosecutors are seeking an order to hold Michael Rotich in custody for a week while they investigate, and said they dont want him to be released because hes likely to interfere with their investigation.British newspaper The Sunday Times alleged over the weekend that Rotich asked its undercover reporters who were posing as coaches for a 10,000 pound ($13,000) payment to give them and their athletes advance warning of doping tests in a popular high-altitude training region in Kenya. Rotich said he could protect athletes from doping controls because he is a senior track federation official in the region and knew the official doping testers and when they would be targeting athletes, The Sunday Times reported.The doping testers were not implicated in any wrongdoing.Rotich was sent home from the Olympics in Rio de Janeiro after the allegations were published, and Kenyan authorities promised to show him no mercy in the latest of a series of doping scandals to rock Kenyan track and field over the last four years.Kenya recently passed legislation criminalizing doping and attempts to aid doping.The secretly-filmed negotiations with Rotich were in January and February, The Sunday Times said, and are part of a larger doping case in Kenya. Three Kenyan men have already been arrested and are facing charges after they allegedly offered to provide the banned blood-booster EPO to undercover reporters in the same region.The investigation into Rotich, the official who was in charge of Kenyas star-studded Olympic track team, would take time and involve investigators traveling to a number of towns in the west of the country to contact possible witnesses and record statements, prosecutor Duncan Ondimu said on Tuesday. Rotichs lawyer asked for him to be released because he was diabetic and because his travel and identity documents had already been confiscated and he wasnt a flight risk.Magistrate Christine Njagi said she would rule on the police application on Wednesday.The Sunday Times report cast even more suspicion on Kenyas track and field program days ahead of the start of the athletics events at the Rio Olympics on Friday.In Rio, International Olympic Committee spokesman Mark Adams said the allegations against Rotich were clearly very serious allegations, but he also moved to give reassurances that Kenyas team had been heavily tested for doping over the last two years. Adams said the Kenyan team had probably been tested more than any other over those two years.---AP Sports Writer Gerald Imray in Rio de Janeiro contributed to this report. 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NEW YORK -- The New York Knicks spent $72 million to make Joakim Noah the anchor of their defense.On Monday, they sat him down and turned around a game.Carmelo Anthony and Kristaps Porzingis each scored 24 points, and the Knicks rolled after a halftime lineup change and beat the short-handed Dallas Mavericks 93-77.The Knicks benched Noah, their big free-agent signing, starting guard Justin Holiday and moving Porzingis to center in a small lineup. They responded by scoring 31 points in the third quarter after managing just 36 in an ugly first half.Second half was really good. Coach made the decision to play small, Noah said. I didnt get to play, everybody wants to play, but its good that we won. We found a way. It was much-needed.Anthony scored 17 in the third quarter and 20 in the second half after shooting 1 for 6 in the first half. Porzingis finished with 11 rebounds, though coach Jeff Hornacek doesnt think his move to starting center is going to be permanent.Just because it was good in the second half doesnt mean were going to change it, Hornacek said.Harrison Barnes scored 20 points and J.J. Barea had 17 for the Mavericks, who are still without Dirk Nowitzki and Deron Williams.The remaining lineup was good enough to take a 39-36 halftime lead but got run off the floor once the Knicks returned with a different look.This is where everybody has got to be totally together, help each other out, really focus on doing the little things at a high level, Mavs coach Rick Carlisle said. I thought the first half we did that. In the second half we had breakdowns.Anthony made a 3-pointer to open the half and later had six straight points in the midst of the Knicks 19-6 run that Holiday capped with a 3-pointer that made it 55-45. New York outscored Dallas 31-12 in the period as the Mavs shot 5 for 20, and it was 67-51 headed to the fourth.Porzingis and Anthony made consecutive 3-pointers that pushed it to 82-64 midway through the period and soon both were on the bench for goood.ddddddddddddoah, a defensive-minded center who battled injuries in his final season in Chicago, grabbed six rebounds in 16 scoreless minutes. He didnt play in the second half, while Holiday finished with 16 points.TIP-INSMavericks: Dallas had won five straight and 24 of the last 29 meetings. ... Barnes had scored 25 or more in a career-best three straight games.Knicks: The Knicks snapped a two-game losing streak. ... New York won for the first time in five games this season when scoring fewer than 100 points.DIRK WORKSNowitzki had a lengthy pregame workout on the court, but by then the Mavs had already determined that he would miss his fourth straight game with a sore right Achilles.I think hes really close. Hes feeling a lot better and we just dont want to rush anything, owner Mark Cuban said. Theres no reason to rush anything with him.TAKE TIMEDallas was twice called for technical fouls in the fourth quarter for calling timeout when it had no timeouts remaining.HELPING HANDHornacek asked Carlisle if Nowitzki would work out with Porzingis in September. They couldnt get anything scheduled but both sides hope they can eventually.Dirks a giver, he would love to see every international guy have the same opportunities hes had, Carlisle said. Its something that didnt work out because I think at the time in September Dirks travel schedule and Kristaps health situation didnt match up, but maybe sometime in the future. I know that Dirk would look forward to spending time with him and vice versa.UP NEXTMavericks: Visit Boston on Wednesday to finish four-game, coast-to-coast road trip that began at the Los Angeles Lakers. Dallas has won seven straight against the Celtics.Knicks: Host Detroit on Wednesday. The Pistons beat the Knicks 102-89 earlier this season.---This story has been corrected to show that Nowitzki has missed four straight games. ' ' '