# Rob Zweekhorst murder investigation

> Live situation record from CLSTR: https://clstr.news/situations/rob-zweekhorst-murder-investigation
> Updated: 2026-09-08T15:30:00.000Z. Sources: 2. Developments: 2.

In August 2026, Dutch police initiated a search in the Ringvaartplas in Rotterdam-Prinsenland to locate a firearm potentially used in the 2014 murder of Rob Zweekhorst. The investigation, referred to as the ‘Berkelse vergismoord’, follows the acquittal of a suspect in June 2026 due to insufficient evidence.

Specialists utilized scans and manual searches to locate objects on the lakebed. Authorities are also investigating a report from a man who claimed to have retrieved a weapon from the lake last year. A reward of 25,000 euros is currently offered for information leading to the perpetrator’s arrest.

## Timeline

### 2026-09-08: Police arrest teenager following armed fatbike robbery

A 15-year-old was arrested in Ridderkerk following a chase linked to an armed fatbike robbery in Rotterdam. Police also seized suspected firearms and fireworks during searches.

2 sources. https://clstr.news/cluster/police-arrest-teenager-following-armed-fatbike-robbery

### 2026-08-10: Rotterdam police search Ringvaartplas for weapon used in 2014 murder

Police are searching the Ringvaartplas in Rotterdam for a firearm linked to the 2014 murder of Rob Zweekhorst, following a recent tip and the acquittal of a previous suspect.

3 sources. https://clstr.news/cluster/rotterdam-police-search-ringvaartplas-for-weapon-used-in-2014-murder

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Cite as: Rob Zweekhorst murder investigation. CLSTR, https://clstr.news/situations/rob-zweekhorst-murder-investigation