An update of the H1 high Q2 analysis and observation of high energy isolated leptons in events with missing pt

Increasing luminosity at HERA now offers the possibility to study ep scattering close to the kinematic limit, given by the available center-of-mass energy of 300 GeV, and to investigate rare event topologies with sufficient statistics. In this context H1 and ZEUS both have reported an excess of events at very high momentum transfers Q2 in the e+p data recorded up to the end of 1996. Here a preliminary update of the H1 high Q2 analysis is presented, including data from the first half of 1997, almost doubling the integrated luminosity of the already published result. In addition, we report on an analysis searching for events with an imbalance in transverse momentum pt. While the majority of events show topologies typical for charged current processes, five have been observed with an isolated e- or μ± with large pt. The corresponding Standard Model expectation from W production with subsequent decay into leptons is 1.75 events