11:45 p.m. Chief Belk reports the suspect fatally shot himself in the head. Dantzler is dead at the scene of the standoff.
11:40 p.m. Grand Rapids Police Chief Kevin Belk will hold a news conference in a few minutes.
11:30 p.m. Police dispatchers report the hostages are both safe and mass murder suspect Rodrick Dantzler has shot himself. An ambulance is approaching the scene.
11:28 p.m. The two hostages remaining inside the house are an adult man and woman. The man is Steve Helderman, 70. The woman does not live at the house; she was just visiting.
11:10 p.m. Police Chief Kevin Belk confirms two hostages remain inside the house at 3232 Rickman Avenue NE with the suspect. One of the remaining hostages was reported to be hiding in the house. 10:10 p.m. Police chief Kevin Belk corrects earlier reports: He indicates two children are among the 7 dead today. One at 2046 Plainfield Ave. NE, a girl, 10; and, newly reported, a child dead at 1270 Brynell Court NE.
9:51 p.m. Mass murders in Grand Rapids: What other media are reporting on Rodrick Dantzler (video)
9:37 p.m. Police dispatch traffic indicates mass murder suspect Rodrick Dantzler has been seen snorting an unknown substance. Police believe he is still armed and reports indicate he has an extended magazine. He is threatening to commit suicide.
9:18 p.m. Mass murder suspect Rodrick Dantzler has released one hostage. She is a 53-year-old woman.
9 p.m. Dantzler has demanded a Gatorade and cigarettes or threatens to kill one of his two hostages. A hostage came out to get the items, but returned inside the house.
8:54 p.m. Does slaying suspect Rodrick Dantzler fit profile of "mass murderer"? A criminal justice professor who specializes in the study of mass murderers and serial killers says Rodrick Dantzler appears to fit a subcategory of mass murderers known as "family annihilators."
8:45 p.m. Mass murder suspect Rodrick Dantzler is again on the phone with police, and police dispatch reports call him "highly agitated." Dantzler says he has two hostages, a man and a woman.
8:41 p.m. Suspect's neighbor calls him "nice and down to earth." Neighbor indicates Dantzler said he had split from his wife.
8:30 p.m. Rodrick Dantzler has felony record dating back to early 1990s.
8:20 p.m. Facebook pages spring up about mass murder suspect Rodrick Dantzler.
7:49 p.m. Police have received a second call from suspect's cell phone.
7:32 p.m. Police have received a call from Rodrick Dantzler indicating he has taken hostages. Shots were heard fired from inside the apartment where hostages were taken.
7:25 p.m. Rodrick Dantzler is believed to have entered an apartment near Soft Water Lake near Plainfield Avenue, north of I-96. The apartments are on Rickman Street fronting the lake. He kicked in the back door of the apartment and three shots were heard by authorities.
7:19 p.m. The suspect's vehicle -- a different vehicle than he was originally reported in -- has crashed in the ditch on I-96. The suspect is fleeing on foot, chased by armed Special Response Team members.
7:08 p.m. Police are involved in a chase, possibly with mass murder suspect Rodrick Dantzler, through downtown Grand Rapids and onto northbound U.S. 131, then eastbound I-96. Shots were fired during the chase; dispatchers report a civilian bystander was struck in the center of downtown Grand Rapids at Division Avenue and Fulton Street.
7 p.m. There will be no Little League games played in the city of Grand Rapids tonight due to the ongoing manhunt.
6:53 p.m. Here is an updated photo of Rodrick Dantzler [via WZZM]
6:50 p.m. A man matching Rodrick Dantzler's description has been spotted at Westgate Bowling Alley parking lot near York Creek.
6:45 p.m. A car matching the description of suspect Rodrick Dantzler's vehicle has been spotted with its rear window shot in York Creek Apartments in Comstock Park. A portion of Alpine Avenue near the large apartment complex has been closed for police investigation.
5:57 p.m. Press archives reveal 3 other multiple homicide cases. Today's mass murder appears to have the highest body count in city history.
5:43 p.m. Today's killing rampage appears to stem from domestic issues. A friend said that a woman who was involved with Dantzler lived at the Plainfield address where two women and one child, reportedly a 10-year-old girl, were found shot to death. A friend also said that the family of a woman with whom Dantzler had a relationship lived on Brynell Court NE, where three adult women and an adult man were found dead.
5:30 p.m. Police believe a separate shooting on Grandville Avenue SW near Martha Street, involving gunfire between occupants in two cars, one of which met the description of the suspect's vehicle, is also related to this rampage.
5:06 p.m. Police scanner traffic indicates the suspect, Rodrick Dantzler, 34, 6-foot-2 and 230 pounds, may be traveling with a white woman in a tan Lincoln Town Car with license plate number BWK 2308. The woman may be driving. Dantzler is believed to be armed and dangerous.
4:51 p.m. Seven people are dead in two locations, according to Police Chief Kevin Belk.
4:48 p.m. Police are clearing Baynton; the suspect is not there. Police report it was a false lead.
4:27 p.m. Tactical unit set up at 25 Baynton Avenue NE. They're using a bullhorn to negotiate with a subject. Area is well kept, tidy homes. Neighbors are being told to stay in their homes.
4:20 p.m. Grand Rapids police reportedly found four victims in unknown conditions at 1270 Brynell Court NE off 4 Mile Road; two bodies at 2046 Plainfield Avenue NE. They have gone to a house on Baynton NE near Aquinas College where a suspect may be.
4:15 p.m. Police are reporting four victims at a home on Brynell Court NE.
4:05 p.m. Police are trying to track down a suspect reportedly armed with an automatic .40 caliber handgun. Police are seeking a suspect in a tan Lincoln with license plate number BWK 2308.
3:38 p.m. Police investigate report of two dead in Plainfield Avenue home. It was not immediately clear whether the deaths were related to an incident on Janes Avenue NE.
3:23 p.m. Police block off neighborhood near Janes Avenue NE, near Knapp Street and Coit Avenue, following the standoff incident that began at 2:30 p.m., telling neighbors to stay inside.
2:41 p.m.: A Grand Rapids man tells mother on phone that he killed his wife and police respond to the scene. The mother says heard gunshot on the phone.