A 38-year-old man was arrested after presenting himself at Kahawa West Police Station in Nairobi and allegedly confessing to killing his girlfriend.

The suspect, identified as Alex Ngugi Njeri, reportedly walked into the station on October 14 at around 5.40pm and told officers that he had murdered Nellious Njeri on the morning of Monday, October 12.

According to Nairobi police commander Issa Mohamud, the incident occurred at Ndunyu ya Chege Market in Murang’a County, where the suspect allegedly stabbed the woman with a knife.

During interrogation, the suspect reportedly confirmed that he had stabbed his girlfriend, prompting police to place him in custody.

The murder had earlier been reported at Ndunyu ya Chege Police Post on October 12.

The suspect was being held at Kahawa West Police Station as authorities awaited the collection of the case for further investigations.

Njeri was discovered lying face down on a bed with multiple stab wounds on her back and the left side of her body below the armpit.

According to police, members of the public reported the incident on October 12 after becoming concerned that a tenant in a locked rental house was not responding to calls.

The house had been secured with a padlock, prompting members of the public to raise the alarm after attempts to reach the occupant through a window failed.

Officers broke into the house and discovered Njeri’s body on the bed.

The scene was processed for evidence as detectives began investigations into the circumstances surrounding her death.

Her body was later moved to Kirwara Level Four Hospital mortuary, where it was being preserved pending a post-mortem examination.

Police are investigating the incident as murder.

Meanwhile, a 21-year-old man was killed after he and his brother-in-law were attacked by four men near the Kasarani Stadium Safari Rally Grounds in Nairobi.

The incident occurred on October 14, 2026, at around 10.45pm as the two were travelling home on a red Honda motorcycle.

According to police, the victims were accosted by four men who attempted to stop them as they approached the Safari Rally Grounds.

When the two declined to stop, the assailants allegedly pelted them with stones, causing them to fall off the motorcycle.

The surviving man managed to escape, but his brother-in-law, identified as Evans Kamau, was struck on the head and succumbed to his injuries.

Police officers on patrol responded to the scene but found that the suspects had fled, leaving the motorcycle behind.

Officers processed and documented the scene before the body was moved to Kenyatta Funeral Home for preservation pending further procedures.

The motive behind the attack remains unknown as police investigate the circumstances surrounding the killing and seek to identify the suspects.