There is no credible or mainstream source confirming that Elon Musk has called for an investigation into Alexandria Ocasio-Cortez (AOC); the claim appears to originate from less reliable or potentially satirical sources.
Elon Musk calling for an investigation into AOC

FactVerify
Source: factverify.com
What the Evidence Shows
The claim states that Elon Musk called for an investigation into AOC. Among the search results, the only direct mention of such a call comes from a source named countylocalnews. Com, which is not a widely recognized or authoritative news outlet.
Other reputable sources such as Yahoo Finance, The Independent, The Economic Times, and TheStreet report on public disputes and criticisms exchanged between Elon Musk and AOC but do not mention Musk calling for any investigation into her. Instead, these sources highlight AOC's criticism of Musk and their political disagreements.
Additionally, some sources appear to be less credible or possibly satirical (e.g., deepnewz. Com), which further undermines the reliability of the claim. Given the absence of confirmation from major, reputable news organizations and the presence of only one questionable source making this claim, it is likely misleading or false.
It is important to note that public figures often have contentious interactions, but calls for formal investigations are typically reported by multiple credible outlets if they occur. Therefore, without corroboration from trustworthy sources, the claim that Elon Musk called for an investigation into AOC cannot be verified and is misleading.