( CNN ) -- A standoff at a beachside Oregon motel ended Tuesday evening with the focus of the police 's attention -- the suspect in his grandparents ' deaths over the weekend -- being taken from his room and transported away in an ambulance . Members of a `` tactical team '' entered the Lincoln City , Oregon , room of 26-year-old Michael Boysen around 7 p.m. ( 10 p.m . ET ) , emerging with no injuries , said city police Chief Keith Kilian . The suspect had suffered apparently self-inflicted cuts , he added . The image of him on a stretcher being placed in a waiting ambulance closed a day full of drama at the WestShore OceanFront Suites . Boysen was taken into custody about an hour after authorities used water cannons to blast down part of the front door to the suspect 's room , a move that showed authorities ' intent to `` just kind of step ... things up a little bit , '' according to Kilian . `` We removed the front door for him to show him which way we wanted him to come out , '' the police chief told reporters a short time later . `` And he chose not to . '' Boysen was released last Friday from the Monroe Correctional Facility in Washington state , where he served a year behind bars for burglary . His grandparents picked him up , drove him around running errands and held a gathering for family members at their home to welcome him back , said King County Sheriff John Urquhart . The next day , the grandparents were found dead . After Boysen and his grandparents did not respond to phone calls Saturday , his mother drove over with a key to the house in Renton , Washington , near Seattle , and found the couple 's bodies . Boysen and his grandparents ' car were missing . Authorities have not said how the victims were killed . A gun was not used , but the deaths were violent , they said . During the course of their investigation , detectives said they learned that Boysen had talked about killing his grandparents , acquiring guns and going after authority figures . He had searched the Internet for gun shows across the Pacific Northwest and Nevada . `` We need to do everything we can to get this man off the street as soon as possible , '' Urquhart said . `` His threats against authority figures make him very dangerous and unpredictable . '' Boysen checked into the WestShore OceanFront Suites , situated along the Pacific Ocean , around 10 or 10:30 p.m. Monday , said Killian . The hotel clerk contacted police around 7:30 a.m. Tuesday after watching a news broadcast and identifying Boysen by face and by name . Police arrived soon thereafter , and an Oregon State Police SWAT team and hostage negotiator were on site by 10:45 a.m. With nearby roads blocked off , armored personnel trucks were stationed in the hotel 's parking lot , while at least one sniper was positioned with clear sight of the suspect 's room , according to video from CNN affiliates at the scene . The police chief said the suspect had barricaded his door , so even after the water cannons were used `` it did n't come down all the way . '' `` His request was for us to go away and leave him alone , '' Killian said then of authorities ' initial communications with the suspect . `` Obviously , we 're not going to do that . '' CNN 's Ben Brumfield and Dan Simon contributed to this report .
NEW : This means the product will ship as received by the manufacturer, sealed, with all advertised components, and with the manufacturer warranty. NEW : No other injuries are reported as authorities go into his room , he adds . Michael Boysen 's grandparents picked him up from prison ; they were later found dead . He later checked into a motel on the Oregon coast , where a clerk noticed him .