Grand Forks, N.D. ? Police in Kansas have arrested a couple previously convicted of conspiring to rob a bank in North Dakota.

A tip from a mail carrier in Lenexa, Kan., led to the arrest Saturday of Anthony and Sally Rappold, who had eluded police for 36 hours.

The Rappolds were wanted on federal probation violation charges for conspiring in 2002 to rob the bank in Pisek, police said.

Anthony Rappold, 36, and Sally Rappold, 31, of Grand Forks, are being held in the Johnson County jail. They likely will be extradited to North Dakota on Tuesday, police said.

Lenexa Police Sgt. Dave Ogilvie said the Rappolds had checked into the motel on Monday. Police found the couple’s car in the parking lot early Friday.

The couple spotted officers and ran down a flight of stairs, just as the officers were running up a different flight of stairs to arrest them, Ogilvie said.

Ogilvie said the Rappolds found blankets and spent most of Friday night under a tree. But when the temperature got too cold, Anthony Rappold found a storage locker at an apartment complex, where the couple spent the rest of the night.

Saturday morning, Sally Rappold told police, they left their hiding place to buy water and food. The couple stopped a mail carrier to ask directions around noon Saturday. The mail carrier recognized them from news reports and called police.

In 2002, Anthony Rappold and another man planned to rob a bank on snowmobiles, with Sally Rappold in a getaway car.

Police said the third man changed his mind and turned informant.

Anthony Rappold was sentenced to 15 months in prison and Sally Rappold was sentenced to 21 months. Both were out of prison on supervised release when they left North Dakota.