"The court sanctioned Ruzhechko's arrest for three months on Thursday. He has asked for political asylum," Rimante Kraulise, spokeswoman for the Vilnius City District Court, told BNS.
The oil pipeline was halted on April 19 after it was found to contain oil with a high content of dichloroethane, a toxic substance with strong corrosive properties.
Oil supplies to at least six European countries were stopped.
The Reuters news agency was the first to report on Friday that Ruzhechko is seeking political asylum in Lithuania.